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Mitsubishi Electric SEH Series Technical & Service Manual
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Mitsubishi Electric SEH Series Technical & Service Manual

Mitsubishi Electric SEH Series Technical & Service Manual

Split-type, heat pump air conditioners, ceiling concealed, indoor unit
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Series SEH/SE
Indoor unit
[Model names]
SEH-1.6AR
SEH-2AR
SEH-2.5AR
SE-1.6AR
SE-2AR
SE-2.5AR
INDOOR UNIT
TIMER
TEMP
TIMER/TEMP.
POWER
ON/OFF
12
29
COOL
11
28
MODE
DRY
10
27
SELECT
g
HEAT
9
26
8
25
UP
HIGH
FAN
7
24
SPEED
LOW
6
23
DOWN
5
22
4
21
AUTO
3
20
STOP
TIMER
2
19
MODE
START
1
18
MITSUBISHI ELECTRIC
SEH-1.6, 2, 2.5AR.TH
SEH-1.6AR
.TH
1
REMOTE CONTROLLER
Ceiling Concealed
[Service Ref.]
SEH-1.6AR.TH
SEH-1.6AR
SEH-2AR.TH
SEH-2.5AR.TH
SE-1.6AR.TH
SE-1.6AR
.TH
1
SE-1.6AR.TH-T
SE-1.6AR
.TH-T
1
SE-2AR.TH
SE-2AR.TH-T
SE-2.5AR.TH
SE-2.5AR.TH-T
TIMER
TEMP
TIMER/TEMP.
POWER
ON/OFF
12
29
COOL
11
28
MODE
10
27
DRY
SELECT
FAN
9
26
8
25
UP
HIGH
FAN
7
24
SPEED
LOW
6
23
DOWN
5
22
4
21
AUTO
3
20
STOP
TIMER
2
19
MODE
START
1
18
MITSUBISHI ELECTRIC
SE-1.6, 2, 2.5AR.TH
SE-1.6AR
.TH
1
SE-1.6, 2, 2.5AR.TH-T
SE-1.6AR
.TH-T
1
• New specification table has been added
on page 11 for the indoor unit of 60Hz
power supply corresponding to multi
type outdoor units.
• Please void OC281 REVISED EDITION-A.
• This manual does not cover the following
outdoor units. When servicing them,
please refer to the service manual
.TH
1
No.OC282 REVISED EDITION-B and
this manual in a set.
SUH-1.6VR.TH, SUH-1.6VR2.TH,
SUH-2VR.TH,
SUH-2VR
SUH-2.5VR.TH,
SU-1.6NR.TH,
SU-2NR.TH,
SU-2.5NR.TH,
SU-1.6VR.TH,
SU-2VR.TH,
SU-2.5VR.TH,
SU-1.6VR.TH-T, SU-1.6VR2.TH-T,
SU-2VR.TH-T,
SU-2.5VR.TH-T
CONTENTS
1. TECHNICAL CHANGE ·························2
2. PART NAMES AND FUNCTIONS ········2
3. SPECIFICATIONS·································5
4. OUTLINES AND DIMENSIONS··········53
5. WIRING DIAGRAM·····························55
7. DATA ···················································63
9. TROUBLESHOOTING ························78
10. DISASSEMBLY PROCEDURE ···········87
11. PARTS LIST ········································90
12. OPTIONAL PARTS··············Back cover
No. OC281
REVISED EDITION-B
SUH-2VR
.TH,
1
.TH,
2
SU-1.6VR2.TH,
SU-2VR
.TH,
1
SU-2VR
.TH-T,
1

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  • Page 1: Table Of Contents

    HEAT 12. OPTIONAL PARTS··············Back cover HIGH HIGH SPEED SPEED DOWN DOWN AUTO AUTO STOP TIMER STOP TIMER MODE START MODE START MITSUBISHI ELECTRIC MITSUBISHI ELECTRIC SE-1.6, 2, 2.5AR.TH SEH-1.6, 2, 2.5AR.TH SE-1.6AR SEH-1.6AR SE-1.6, 2, 2.5AR.TH-T SE-1.6AR .TH-T REMOTE CONTROLLER...

  • Page 2: Technical Change

    TECHNICAL CHANGE DSAR(SURGE ABSORBER) has been added to the products which have been manufactured since April 2000. • Chang of WIRING DIAGRAM (Page 55, 56) • Addition of service parts (Page 91, 93) PART NAMES AND FUNCTIONS Indoor Unit SEH-1.6AR.TH SEH-2AR.TH SEH-2.5AR.TH SEH-1.6AR...
  • Page 3 TIMER display MODE START Lamps indicate time FAN SPEED button remaining until timer stops MITSUBISHI ELECTRIC timed operation. Green This button is used to lamps corresponding to change between low and remaining number of hours high fan speeds. One of light.
  • Page 4 TIMER display MODE START Lamps indicate time FAN SPEED button remaining until timer stops MITSUBISHI ELECTRIC timed operation. Green This button is used to lamps corresponding to change between low and remaining number of hours high fan speeds. One of light.

  • Page 5: Specifications

    SPECIFICATIONS Indoor unit SEH-1.6AR.TH SEH-1.6AR Service Ref. Outdoor unit SUH-1.6VR.TH SUH-1.6VR2.TH Function Cooling Heating Cooling Heating Power supply Single phase, 220-240V, 50Hz Capacity 3.9-3.9 4.1-4.2 4.0-4.1 4.5-4.6 — — Capacity Dehumidification Air flow 7.0-7.3 6.4-6.8 Running current Power input 1460-1590 1350-1460 1600-1700 1510-1610...
  • Page 6 Indoor unit SEH-2AR.TH SEH-2.5AR.TH SUH-2VR.TH Service Ref. SUH-2.5VR.TH Outdoor unit SUH-2VR SUH-2VR Function Cooling Heating Cooling Heating Power supply Single phase, 220-240V, 50Hz Single phase, 220-240V, 50Hz 5.3-5.4 5.7-5.8 Capacity 6.6-6.7 6.9-7.0 Dehumidification — Capacity — Air flow 1020 1200 Running current 10.4-9.9 9.4-9.1...
  • Page 7 Indoor unit SE -1.6AR.TH SE -1.6AR SE -1.6AR.TH SE -1.6AR.TH-T Model SU -1.6NR.TH SU -1.6VR.TH SU -1.6VR.TH-T Outdoor unit Function Cooling Power supply Single phase, 220V, 60Hz Single phase, 220-240V, 50Hz Capacity 3800 4000 Capacity Dehumidification Air flow 7.0-6.8 Running current Power input 1500 1490-1550...
  • Page 8 Indoor unit SE -1.6AR .TH SE -1.6AR .TH-T Model SU -1.6VR2.TH SU -1.6VR2.TH-T Outdoor unit Function Cooling Power supply Single phase, 220-240V, 50Hz Capacity 4000-4100 Capacity Dehumidification Air flow Running current Power input 1640-1740 Power factor 97-94 Electrical Starting current 36-39 data Compressor motor current...
  • Page 9 Indoor unit SE -2AR.TH SE -2AR.TH SE -2AR.TH-T Service Ref. SU -2VR.TH SU -2VR.TH-T SU -2NR.TH Outdoor unit SU -2VR .TH SU -2VR .TH-T Function Cooling Power supply Single phase, 220V, 60Hz Single phase, 220-240V, 50Hz 5900 5600 Capacity Capacity Dehumidification Air flow 1020...
  • Page 10 Indoor unit SE -2.5AR.TH SE -2.5AR.TH SE -2.5AR.TH-T Service Ref. Outdoor unit SU -2.5NR.TH SU -2.5VR.TH SU -2.5VR.TH-T Function Cooling Power supply Single phase, 220V, 60Hz Single phase, 220-240V, 50Hz 7000 6600 Capacity Capacity Dehumidification Air flow 1200 13.6 14.0-13.2 Running current 2920 3030-3050...
  • Page 11 Indoor model SEH-1.6AR SEH-2AR SEH-2.5AR Indoor unit power supply Single phase 220V, 60Hz Capacity Air flow(Hi) 1,020 1,200 Electrical Fan motor current 0.26 0.34 0.45 data Model PK6V19-EC PK6V32-EC PK6V50-EC WHT-BLK :251.4 BLK-BLU :19.9 WHT-BLK :161.9 BLK-BLU :50.3 WHT-BLK :101.1 BLK-BLU :56.1 Winding motor Ω...
  • Page 12 PERFORMANCE DATA COOLING operation(220V, 50Hz) SEH-1.6AR / SUH-1.6VR CAPACITY : 3.9 kW INPUT : 1460 W SHF : 0.7 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 4.58 2.38 0.52 1168 4.39 2.28...
  • Page 13 PERFORMANCE DATA COOLING operation(220V, 50Hz) SEH-1.6AR / SUH-1.6VR CAPACITY : 3.9 kW INPUT : 1460 W SHF : 0.7 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.82 1.99 0.52 1431 3.51 1.83 0.52 1518 3.24...
  • Page 14 PERFORMANCE DATA COOLING operation(240V, 50Hz) SEH-1.6AR / SUH-1.6VR CAPACITY : 3.9 kW INPUT : 1590 W SHF : 0.7 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.38 0.52 1272 4.39 2.28 0.52...

  • Page 15: Cooling Operation(240V, 50Hz)

    PERFORMANCE DATA COOLING operation(240V, 50Hz) SEH-1.6AR / SUH-1.6VR CAPACITY : 3.9 kW INPUT : 1590 W SHF : 0.7 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.82 1.99 0.52 1558 3.51 1.83 0.52 1654 3.24...
  • Page 16 PERFORMANCE DATA COOLING operation(220V, 50Hz) SEH-1.6AR / SUH-1.6VR2 CAPACITY : 4.0 kW INPUT : 1600 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.70 2.59 0.55 1280 4.50 2.48...
  • Page 17 PERFORMANCE DATA COOLING operation(220V, 50Hz) SEH-1.6AR / SUH-1.6VR2 CAPACITY : 4.0 kW INPUT : 1600 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.92 2.16 0.55 1568 3.60 1.98 0.55 1664 3.32...
  • Page 18 PERFORMANCE DATA COOLING operation(240V, 50Hz) SEH-1.6AR / SUH-1.6VR2 CAPACITY : 4.1 kW INPUT : 1700 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.82 2.65 0.55 1360 4.61 2.54...

  • Page 19: Outdoor Db(;)

    PERFORMANCE DATA COOLING operation(240V, 50Hz) SEH-1.6AR / SUH-1.6VR2 CAPACITY : 4.1 kW INPUT : 1700 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.02 2.21 0.55 1666 3.69 2.03 0.55 1768 3.40...

  • Page 20: Qshc Shf Inputq

    PERFORMANCE DATA COOLING operation(220V, 50Hz) SEH-2AR / SUH-2VR CAPACITY : 5.3 kW INPUT : 2270 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 6.23 3.43 0.55 1816 5.96 3.28...
  • Page 21 PERFORMANCE DATA COOLING operation(220V, 50Hz) SEH-2AR / SUH-2VR CAPACITY : 5.3 kW INPUT : 2270 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 5.19 2.86 0.55 2225 4.77 2.62 0.55 2361 4.40...
  • Page 22 PERFORMANCE DATA COOLING operation(240V, 50Hz) SEH-2AR / SUH-2VR CAPACITY : 5.4 kW INPUT : 2330 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.49 0.55 1864 6.08 3.34 0.55...
  • Page 23 PERFORMANCE DATA COOLING operation(240V, 50Hz) SEH-2AR / SUH-2VR CAPACITY : 5.4 kW INPUT : 2330 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 5.29 2.91 0.55 2283 4.86 2.67 0.55 2423 4.48...
  • Page 24 PERFORMANCE DATA COOLING operation(220V, 50Hz) SEH-2.5AR / SUH-2.5VR CAPACITY : 6.6 kW INPUT : 2950 W SHF : 0.69 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.79 2478 7.13 3.64 0.51 2596...
  • Page 25 PERFORMANCE DATA COOLING operation(220V, 50Hz) SEH-2.5AR / SUH-2.5VR CAPACITY : 6.6 kW INPUT : 2950 W SHF : 0.69 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 6.47 3.30 0.51 2891 5.94 3.03 0.51 3068 5.48...
  • Page 26 PERFORMANCE DATA COOLING operation(240V, 50Hz) SEH-2.5AR / SUH-2.5VR CAPACITY : 6.7 kW INPUT : 2950 W SHF : 0.69 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 7.87 4.01 0.51 2360 7.54 3.84...
  • Page 27 PERFORMANCE DATA COOLING operation(240V, 50Hz) SEH-2.5AR / SUH-2.5VR CAPACITY : 6.7 kW INPUT : 2950 W SHF : 0.69 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 6.57 3.35 0.51 2891 6.03 3.08 0.51 3068 5.56...
  • Page 28 PERFORMANCE DATA COOLING operation(220V, 50Hz) SE-1.6AR / SU-1.6VR CAPACITY : 4.0 kW INPUT : 1490 W SHF : 0.72 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.70 2.54 0.54 1192 4.50 2.43...
  • Page 29 PERFORMANCE DATA COOLING operation(220V, 50Hz) SE-1.6AR / SU-1.6VR CAPACITY : 4.0 kW INPUT : 1490 W SHF : 0.72 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.92 2.12 0.54 1460 3.60 1.94 0.54 1550 3.32...
  • Page 30 PERFORMANCE DATA COOLING operation(240V, 50Hz) SE-1.6AR / SU-1.6VR CAPACITY : 4.0 kW INPUT : 1550 W SHF : 0.72 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.70 2.54 0.54 1240 4.50 2.43...
  • Page 31 PERFORMANCE DATA COOLING operation(240V, 50Hz) SE-1.6AR / SU-1.6VR CAPACITY : 4.0 kW INPUT : 1550 W SHF : 0.72 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.12 0.54 1519 3.60 1.94 0.54 1612 3.32 1.79...
  • Page 32 PERFORMANCE DATA COOLING operation(220V, 50Hz) SE-1.6AR / SU-1.6VR2 CAPACITY : 4.0 kW INPUT : 1640 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 2.59 1312 4.50 2.48 0.55 1378...
  • Page 33 PERFORMANCE DATA COOLING operation(220V, 50Hz) SE-1.6AR / SU-1.6VR2 CAPACITY : 4.0 kW INPUT : 1640 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.92 2.16 0.55 1607 3.60 1.98 0.55 1706 3.32...
  • Page 34 PERFORMANCE DATA COOLING operation(240V, 50Hz) SE-1.6AR / SU-1.6VR2 CAPACITY : 4.1 kW INPUT : 1740 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.82 2.65 0.55 1392 4.61 2.54...
  • Page 35 PERFORMANCE DATA COOLING operation(240V, 50Hz) SE-1.6AR / SU-1.6VR2 CAPACITY : 4.1 kW INPUT : 1740 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.02 2.21 0.55 1705 3.69 2.03 0.55 1810 3.40...
  • Page 36 PERFORMANCE DATA COOLING operation(220V, 50Hz) SE-2AR / SU-2VR CAPACITY : 5.6 kW INPUT : 2250 W SHF : 0.68 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 6.05 3.02 0.50 1980 5.82 2.91...
  • Page 37 PERFORMANCE DATA COOLING operation(220V, 50Hz) SE-2AR / SU-2VR CAPACITY : 5.6 kW INPUT : 2250 W SHF : 0.68 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 4.65 2.32 0.50 2430 5.49 2.74 0.50 2205 5.04...
  • Page 38 PERFORMANCE DATA COOLING operation(240V, 50Hz) SE-2AR / SU-2VR CAPACITY : 5.6 kW INPUT : 2350 W SHF : 0.68 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 6.05 3.02 0.50 2068 5.82 2.91...
  • Page 39 PERFORMANCE DATA COOLING operation(240V, 50Hz) SE-2AR / SU-2VR CAPACITY : 5.6 kW INPUT : 2350 W SHF : 0.68 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 5.49 2.74 0.50 2303 5.04 2.52 0.50 2444 4.65...
  • Page 40 PERFORMANCE DATA COOLING operation(220V, 50Hz) SE-2.5AR / SU-2.5VR CAPACITY : 6.6 kW INPUT : 3030 W SHF : 0.66 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 7.76 3.72 0.48 2424 7.43 3.56...
  • Page 41 PERFORMANCE DATA COOLING operation(220V, 50Hz) SE-2.5AR / SU-2.5VR CAPACITY : 6.6 kW INPUT : 3030 W SHF : 0.66 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.85 3151 5.48 2.63 0.48 3272 6.47 3.10 0.48...
  • Page 42 PERFORMANCE DATA COOLING operation(240V, 50Hz) SE-2.5AR / SU-2.5VR CAPACITY : 6.6 kW INPUT : 3050 W SHF : 0.66 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 7.76 3.72 0.48 2440 7.43 3.56...
  • Page 43 PERFORMANCE DATA COOLING operation(240V, 50Hz) SE-2.5AR / SU-2.5VR CAPACITY : 6.6 kW INPUT : 3050 W SHF : 0.66 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 6.47 3.10 0.48 2989 5.94 2.85 0.48 3172 5.48...
  • Page 44 PERFORMANCE DATA COOLING operation(220V, 60Hz) SE-1.6AR / SU-1.6NR CAPACITY : 3.8 kW INPUT : 1500 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.47 2.46 0.55 1200 4.28 2.35...
  • Page 45 PERFORMANCE DATA COOLING operation(220V, 60Hz) SE-1.6AR / SU-1.6NR CAPACITY : 3.8 kW INPUT : 1500 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.72 2.05 0.55 1470 3.42 1.88 0.55 1560 3.15...
  • Page 46 PERFORMANCE DATA COOLING operation(220V, 60Hz) SE-2AR / SU-2NR CAPACITY : 5.9 kW INPUT : 2500 W SHF : 0.69 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 6.93 3.54 0.51 2000 6.64 3.39...
  • Page 47 PERFORMANCE DATA COOLING operation(220V, 60Hz) SE-2AR / SU-2NR CAPACITY : 5.9 kW INPUT : 2500 W SHF : 0.69 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 5.78 2.95 0.51 2450 5.31 2.71 0.51 2600 4.90...
  • Page 48 PERFORMANCE DATA COOLING operation(220V, 60Hz) SE-2.5AR / SU-2.5NR CAPACITY : 7.0 kW INPUT : 2920 W SHF : 0.68 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 7.56 3.78 0.50 2570 7.28 3.64...
  • Page 49 PERFORMANCE DATA COOLING operation(220V, 60Hz) SE-2.5AR / SU-2.5NR CAPACITY : 7.0 kW INPUT : 2920 W SHF : 0.68 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 6.86 3.43 0.50 2862 6.30 3.15 0.50 3037 5.81...
  • Page 50 PERFORMANCE DATA HEATING operation(220V, 50Hz) SEH-1.6AR / SUH-1.6VR CAPACITY : 4.1 kW INPUT : 1350 W OUTDOOR W.B.(;) INDOOR D.B.(;) INPUT INPUT INPUT INPUT INPUT INPUT INPUT 2.58 3.12 1053 3.65 1188 4.18 1283 4.72 1364 5.21 1410 5.74 1431 2.46 2.95 1121...
  • Page 51 HEATING operation(240V, 50Hz) SEH-1.6AR / SUH-1.6VR CAPACITY : 4.2 kW INPUT : 1460 W OUTDOOR W.B.(;) INDOOR D.B.(;) INPUT INPUT INPUT INPUT INPUT INPUT INPUT 2.65 3.19 1139 3.74 1285 4.28 1387 4.83 1475 5.33 1518 5.88 1548 2.52 1022 3.02 1212 3.57...
  • Page 52 NOISE CRITERION CURVES <50/60Hz> <50/60Hz> SEH-1.6AR SEH-2AR NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE SE-2AR SE-1.6AR NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE TERESHOLD OF TERESHOLD OF HEARING FOR HEARING FOR NC-20 NC-20 CONTINUOUS CONTINUOUS NOISE NOISE 1000 2000...

  • Page 53: Outlines And Dimensions

    OUTLINES AND DIMENSIONS SEH-1.6AR.TH SEH-2AR.TH SEH-2.5AR.TH SEH-1.6AR SE-1.6AR.TH SE-2AR.TH SE-2.5AR.TH SE-1.6AR SE-1.6AR.TH-T SE-2AR.TH-T SE-2.5AR.TH-T SE-1.6AR .TH-T Unit : mm Electrical parts 20 mm or more INDOOR UNIT Suspension bolt pitch Air inlet Access door Electrical parts box View A Refrigerent pipe(gas) Refrigerent pipe(liquid) {12.7 (SEH-1.6AR.TH) {6.35 (SEH-1.6, 2AR.TH)
  • Page 54 HEAT HIGH SPEED DOWN AUTO STOP TIMER MODE START MITSUBISHI ELECTRIC Fixing hole Remote controller cable installation For exposed remote controller cable installation For recessed remote controller cable installation Exposed remote controller cable Remote controller cable Conduit tube (local arrangement)

  • Page 55: Wiring Diagram

    WIRING DIAGRAM SEH-1.6AR.TH SEH-2AR.TH SEH-2.5AR.TH SEH-1.6AR CIRCUIT BREAKER GRN/YLW HIC1 LDCOM POWER SUPPLY LDC11 LDC12 220-240V 220V LDFH 50Hz 60Hz GRN/YLW SR144 TRANS CN201 LDFL SR142 LDFM SR143 LDFVL TO OUTDOOR SR141 UNIT 220-240V~ ELECTRONIC CONTROL P.C BOARD GRN/YLW CONNECTING 12VDC 3 104B RT11...
  • Page 56 SE-1.6AR.TH SE-2AR.TH SE-2.5AR.TH SE-1.6AR SE-1.6AR.TH-T SE-2AR.TH-T SE-2.5AR.TH-T SE-1.6AR .TH-T CIRCUIT BREAKER GRN/YLW HIC1 LDCOM LDC11 POWER SUPPLY LDC12 220-240V 220V 50Hz 60Hz TRANS LDFH CN201 SR144 GRN/YLW LDFL SR142 LDFM SR143 TO OUTDOOR ELECTRONIC CONTROL P.C BOARD GRN/YLW 220-240V 220V UNIT 50Hz 60Hz...

  • Page 57: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM SUH-1.6VR.TH SEH-1.6AR.TH SUH-1.6VR2.TH SEH-1.6AR INDOOR UNIT OUTDOOR UNIT Strainer 1 Refrigerant pipe [12.7 Reversing (#100) valve (Option) (with heat insulator) Muffler Stop valve Strainer Indoor (#50) (with service port) heat Outdoor Flared connection exchanger heat exchanger Indoor coil thermistor Discharge RT12...
  • Page 58 SUH-2.5VR.TH SEH-2.5AR.TH INDOOR UNIT OUTDOOR UNIT Refrigerant pipe [15.88 Reversing Strainer 2 (Option) valve (#100) (with heat insulator) Muffler Strainer Ball valve Indoor (#50) heat Outdoor Flared connection exchanger heat exchanger Indoor coil Discharge thermistor Pressure RT12 Regulator Distributor Defrost (With strainer) thermistor Distributor...
  • Page 59 SE-1.6AR.TH SU-1.6NR.TH SE-1.6AR INDOOR UNIT OUTDOOR UNIT Refrigerant pipe [12.7 (Option) (with heat insulator) Stop valve Strainer Indoor (#50) (with service port) heat Outdoor Flared connection exchanger heat exchanger Indoor coil thermistor RT12 Distributor Discharge (With strainer) pressure regulator Compressor Room temperature Capillary tube Flared connection...
  • Page 60 SE-1.6AR.TH SE-1.6AR SU-1.6VR.TH SU-1.6VR2.TH SE-1.6AR.TH-T SE-1.6AR .TH-T SU-1.6VR.TH-T SU-1.6VR2.TH-T INDOOR UNIT OUTDOOR UNIT Refrigerant pipe [12.7 (Option) (with heat insulator) Strainer Stop valve Indoor (#50) (with service port) heat Outdoor Flared connection exchanger heat exchanger Indoor coil thermistor RT12 Distributor (With strainer) Compressor Room temperature...
  • Page 61 MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE Service Ref. Length : m(ft) Piping size O.D. : mm (in.) Indoor unit Outdoor unit Liquid SEH-1.6AR.TH SEH-1.6AR SUH-1.6VR.TH SUH-1.6VR2.TH SE-1.6AR.TH SE-1.6AR SU-1.6NR.TH SU-1.6VR.TH SU-1.6VR2.TH {12.7(1/2) SE-1.6AR.TH-T SE-1.6AR .TH-T SU-1.6VR.TH-T SU-1.6VR2.TH-T {6.35(1/4) SEH-2AR.TH SUH-2VR.TH SUH-2VR...
  • Page 62 EVACUATION PROCEDURES Connect the refrigerant pipes (both the liquid and gas pipes) between the indoor and the outdoor units. Remove the service port cap of the stop/ball valve on the gas pipe side of the outdoor unit gas pipe. (The stop/ball valve will not work in its initial state fresh out of the factory (totally closed with cap on).) Connect the gauge manifold valve and the vacuum pump to the service port of the stop/ball valve of the outdoor unit.

  • Page 63: Data

    DATA The standard data contained in these specifications apply only to the operation of the air conditioner under normal condition. Operating conditions vary according to the areas where these units are installed. The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve. (1) GUARANTEED VOLTAGE Rated voltage : ±10% SU-NR(198~242V 60Hz) / SU(H)-VR(198~264V 50Hz) (2) AIR FLOW...
  • Page 64 SUH-VR (50Hz) 10.0 20.6 23.1 22.3 22.9 19.0 21.4 20.6 21.1 17.5 18.6 18.9 19.4 15.9 17.8 17.2 17.6 14.3 16.0 15.4 15.8 12.7 14.2 13.7 14.1 11.1 12.5 12.0 12.3 10.7 10.3 10.6 SU-NR (60Hz) 10.4 10.5 SU-VR (50Hz)
  • Page 65 (4) OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation 1 Both indoor and outdoor units are under the same temperature/humidity condition. Dry Bulb temperature ( Relative humidity ( ˚C 2 Air flow should be set at MAX. 3 The unit of pressure has been changed to MPa based on the international system of units(SI unit system). The converted score against the traditional unit system can be gotten according to the formula below.
  • Page 66 SEH-2.5AR.TH / SUH-2.5VR.TH 220V (kgf/F• G) (MPa•G) 240V 15 18 20 30 32 35(:) 15 18 20 30 32 35(:) Ambient temperature (:) / Ambient humidity (%) Ambient temperature (:) / Ambient humidity (%) SE-1.6AR.TH, SE-1.6AR .TH / SU-1.6NR.TH (kgf/F) (MPa) 220V 15 18 20...
  • Page 67 SE-1.6AR.TH / SU-1.6VR.TH SE-1.6AR.TH-T / SU-1.6VR.TH-T (kgf/F) (MPa) 220v 240v 15 18 20 30 32 35(:) 15 18 20 30 32 35(:) Ambient temperature (:) / Ambient humidity (%) Ambient temperature (:) / Ambient humidity (%) SE-1.6AR .TH / SU-1.6VR2.TH SE-1.6AR .TH-T / SU-1.6VR2.TH-T (kgf/F)
  • Page 68 SEH-1.6AR.TH / SUH-1.6VR.TH SEH-1.6AR .TH / SUH-1.6VR2.TH HEAT operation Condition Indoor : Dry bulb temerature 20.0: Outdoor : Dry bulb temerature 7,15,20: Wet bulb temerature 14.5: Wet bulb temerature 6,12,14.5: SEH-1.6AR.TH /SUH-1.6VR.TH SEH-1.6AR1.TH/SUH-1.6VR2.TH 240V 240V 220V 220V 25(:) 25(:) Ambient temperature (:) Ambient temperature (:) SEH-2AR.TH / SUH-2VR.TH, SUH-2VR .TH, SUH-2VR...
  • Page 69 (5) INDOOR FAN PERFORMANCE AND CORRECTED AIR FLOW SEH-1.6AR.TH (50Hz) Corrected Air flow Capacity Input SEH-1.6AR Cooling Fan Performance Recommended range Air flow (K/X) Heating Air flow (K/X) Air flow (K/X) SEH-2AR.TH (50Hz) Corrected Airflow Capacity Input Cooling Fan Performance Recommended range Air flow (K/X) Heating...
  • Page 70 SE-1.6AR.TH (60Hz) Fan Performance Recommended range Corrected Air flow Capacity Input Air flow (K/X) Air flow (K/X) SE-2AR.TH (60Hz) Fan Performance Recommended range Corrected Airflow Capacity Input Air flow (K/X) Air flow (K/X) SE-2.5AR.TH (60Hz) Fan Performance Recommended range Corrected Air flow Capacity Input Air flow (K/X)
  • Page 71 SE-1.6AR.TH (50Hz) SE-1.6AR SE-1.6AR.TH-T Fan Performance SE-1.6AR .TH-T Recommended range Corrected Air flow Capacity Input Air flow (K/X) Air flow (K/X) SE-2AR.TH (50Hz) SE-2AR.TH-T Fan Performance Recommended range Corrected Airflow Capacity Input Air flow (K/X) Air flow (K/X) SE-2.5AR.TH (50Hz) SE-2.5AR.TH-T Fan Performance Recommended range...

  • Page 72: Microprocessor Control

    START 3. The lighting lamp shows the set temperature, and the flashing lamp shows the room temperature. MITSUBISHI ELECTRIC When the room temperature is equal to the set temperature, the lamp keeps lighting, 0.5 seconds brightly and 0.5 seconds faintly.
  • Page 73 AUTO processor control automatically. STOP TIMER MODE START 3. The flashing lamp shows the room temperature. MITSUBISHI ELECTRIC <DRY operation time chart> In case of the room temperature of 23: and above. 1st ON Thermostat Indoor fan Outdoor fan compressor 3min.
  • Page 74 3. The lighting lamp shows the set temperature, and the flashing lamp MODE START shows the room temperature. MITSUBISHI ELECTRIC When the room temperature is equal to the set temperature, the lamp keeps lighting, 0.5 seconds brightly and 0.5 seconds faintly. <HEAT operation time chart>...
  • Page 75 (2) Indoor fan control 1 Cold air prevention control The fan runs at set speed when the indoor coil thermistor RT12 temperature exceeds 22°C. The fan operates at VLo when the temperature is below 18°C. But the fan stops when the indoor fan operates at VLo and the room temperature is 15°C or less.
  • Page 76 (5) Defrosting Defrosting of outdoor heat exchanger is controlled by deicer P.C. board, with detection by the defrost thermistor RT61. 1Defrost starting conditions When all conditions of a),b) are satisfied, the defrosting operation starts. a) Under the heat operation, the compressor cumulative operation time exceeds 40 minutes without the defrosting opera- tion working.
  • Page 77 DOWN AUTO STOP TIMER MODE START MITSUBISHI ELECTRIC (1) Indoor fan control The indoor fan speed LOW / HIGH depends on the remote controller setting. 5. TIMER operation <Timer function> AUTO STOP ·········Air conditioner stops after the set time lapses.

  • Page 78: Troubleshooting

    7. SERVICE FUNCTION (1) AUTO RESTART FUNCTION Operating the J2 Jumper line on the remote control Interface P.C.board of the indoor unit. The function can set the auto restart function. wAuto restart setting on the shipping. J2 = Auto restart Cut J2 = no auto restart (2) COMPULSORY DEFROSTING MODE FOR SERVICE By short circuit of the connector JP607 and R853 on the deicer P.C.
  • Page 79 2. Self diagnostic function (1) When trouble occurs during operation, the unit stops and enters the self-diagnostic mode, and displays the trouble loca- tion with the timer lamps on the remote controller. All the other lamps are OFF. (2) To activate the self-diagnostic function for service, press the UP and DOWN buttons simultaneously for more than two TEMP.
  • Page 80 3. Trouble shooting (1) In case of being indicated irregularity on the self diagnoses Phenomenon Cause Countermeasure Remote controller interface Mis-wiring of the Interface Reinsert the wiring connector of the Interface signal error P.C.board. P.C.board. Trouble of the Interface P.C.board. Exchange the Interface P.C.board. Trouble of the Indoor P.C.board.
  • Page 81 (2) Other case Phenomenon Cause Countermeasure Not working of remote con- Mis-connecting the remote control wiring. Reinsert the connector of remote control wiring. troller switch ON/OFF Mis-connecting the Interface P.C.board. Reinsert the wiring connector of Indoor P.C.board and Interface P.C.board. Short circuit the protecting parts in the Check the varistor(NR11) and fuse(F11) out in the Indoor P.C.board.
  • Page 82 Check of indoor controller board and indoor fan motor The timer/room-temperature lamp of 28°C on the remote controller lights in the self-diagnostic mode. Error was found in the signal transmitted or received between the indoor and outdoor units. Are there any devices emitting Is the connecting wire between noise near the power supply or the indoor and outdoor units...
  • Page 83 The switch of remote controller does not work. Is the wiring between the Is the varistor on the indoor Is the fuse on the indoor remote controller and the controller board burnt? controller board melted? remote controller interface correct ? Replace the varistor.
  • Page 84 4. Test point of P.C.board (1) Indoor electronic control P.C. board Fan motor power supply 220 - 240V AC 50Hz 60Hz Fuse 250V AC 3.15A Power supply input 220-240V AC 12V DC – 5V DC – Room temperature thermistor (RT11) Time short point Indoor coil thermistor (RT12) Indoor coil thermistor (RT12)
  • Page 85 (2) Remote controller interface P.C. board REMOTE CONTROLLER Indoor electronic control P.C.board – JP15= 0V + JP16= 12V DC + JP17= 5V DC AUTO RESTART FUNCTION 4degrees up Function...
  • Page 86 5. Trouble criterion of main parts SEH-1.6AR.TH SEH-2AR.TH SEH-2.5AR.TH SEH-1.6AR SE-1.6AR.TH SE-2AR.TH SE-2.5AR.TH SE-1.6AR SE-1.6AR.TH-T SE-2AR.TH-T SE-2.5AR.TH-T SE-1.6AR .TH-T Part name Check method and criterion Figure Room Measure the resistance with a tester. temperature (Part temperature 10°C ~ 30°C) thermistor Normal Abnormal Indoor coil...

  • Page 87: Disassembly Procedure

    DISASSEMBLY PROCEDURE SEH-1.6AR.TH SEH-2AR.TH SEH-2.5AR.TH SEH-1.6AR SE-1.6AR.TH SE-2AR.TH SE-2.5AR.TH SE-1.6AR SE-1.6AR.TH-T SE-2AR.TH-T SE-2.5AR.TH-T SE-1.6AR .TH-T OPERATING PROCEDURE PHOTOS Photo 1. Electrical parts cover 1. Removing the electrical parts (1) Remove the 2 screws and the electrical parts cover. (See Photo 1.) Indoor controller board Transformer Run capacitor...
  • Page 88 PHOTOS OPERATING PROCEDURE 3. Removing the room temp. thermistor(RT11) Photo 4. (1) Remove the electrical parts cover. Motor bands (See Photo 1.) Fan casing Claws (2) Remove the front panel at fan side.(12 screws) Fan motor (See Photo 1.) (3) Remove the thermistor (RT11) from the fan casing. (See Photo 4.) (4) Disconnect the connector (CN113)from the indoor controller board and pull the lead wire of...
  • Page 89 OPERATING PROCEDURE PHOTOS 5. Removing the drain pan (1) Unscrew each set screw on the right and left, and remove the drain pan pushing it toward the the back. (See Photo 1.) Photo 6. 6. Removing the heat exchanger (1) Remove the drain pan. (See Photo 1.) Screws (2) Remove the Under flange at heat exchanger side.

  • Page 90: Parts List

    PARTS LIST INDOOR UNIT STRUCTURAL PARTS SEH-1.6AR.TH SEH-1.6AR SEH-2AR.TH SEH-2.5AR.TH Part number that is circled is not shown in the illustration. Q'ty/set Price Wiring Recom- Parts No. Specification Remarks Parts name SEH-1.6 SEH-2 SEH-2.5 Diagram mended Unit Amount (Drawing No.) AR.TH Symbol Q'ty...
  • Page 91 INDOOR UNIT ELECTRICAL PARTS SEH-1.6AR.TH SEH-1.6AR SEH-2AR.TH SEH-2.5AR.TH Part numbers that are circled are not shown in the illustration. Q'ty/set Price Wiring Recom- Parts No. Specification Remarks Parts name Diagram mended SEH-1.6 SEH-2 SEH-2.5 Unit Amount (Drawing No.) Symbol Q'ty AR.TH AR.TH E07 027 089...
  • Page 92 INDOOR UNIT STRUCTURAL PARTS SE-1.6AR.TH SE-1.6AR SE-2AR.TH SE-2.5AR.TH SE-1.6AR.TH-T SE-1.6AR .TH-T SE-2AR.TH-T SE-2.5AR.TH-T Part number that is circled is not shown in the illustration. Q'ty/set Price Wiring Recom- Parts No. Specification SE-1.6 SE-2 Remarks Parts name SE-2.5 Diagram mended Unit Amount (Drawing No.) AR.TH AR.TH AR.TH-T...
  • Page 93 INDOOR UNIT ELECTRICAL PARTS SE-1.6AR.TH SE-1.6AR SE-2AR.TH SE-2.5AR.TH SE-1.6AR.TH-T SE-1.6AR .TH-T SE-2AR.TH-T SE-2.5AR.TH-T Part numbers that are circled are not shown in the illustration. Q'ty/set Price Wiring Recom- Remarks SE-1.6 SE-2 SE-2.5 Parts No. Specification Parts name Diagram mended (Drawing No.) Unit Amount AR.TH AR.TH AR.TH-T...

  • Page 94: Optional Parts

    SE-2AR.TH-T SE-2.5AR.TH-T HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2002 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Reprinted in Feb. 2004 No. OC281 REVISED EDITION-B PDF 25 Distributed in May 2003 No. OC281 REVISED EDITION-B 224 Reprinted in Mar.
  • Page 95 Related Links Model Number: SE-2AR.TH SE-1.6-2.5_Parts_Catalog_(OC281B) SE-1.6-2.5_Service_Manual_(OC281B)

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