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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Series SLH/SL
Indoor unit
[Model names]
SLH-1AR
SLH-1.6AR
SL-1AR
SL-1.6AR
SL-2AR
INDOOR UNIT
h
ON/OFF
TOO
TOO
WARM
COOL
FAN
SELECT
AUTO COOL
VANE
TIME
HEAT
DRY
MODE
RESET
REMOTE CONTROLLER
SLH-1AR
SLH-1.6AR
SLH-2AR
Ceiling Cassettes
[Service Ref.]
SLH-1AR.TH
SLH-1AR
SLH-1.6AR.TH
SLH-1.6AR
SLH-2AR.TH
SLH-2AR
SL-1AR.TH
SL-2AR.TH
SL-2AR.TH-T
h
ON/OFF
TOO
TOO
WARM
COOL
FAN
SELECT
COOL
VANE
TIME
FAN
DRY
MODE
RESET
SL-1AR
SL-1.6AR
SL-2AR
Revision:
•SLH-1AR
SLH-2AR
EDITION-B.
•Please void OC280 REVISED
EDITION-A.
•This manual does not cover the
following outdoor units. When
.TH
1
servicing them, please refer to the
service manual No.OC282 REVISED
EDITION-B and this manual in a set.
.TH
SUH-1VR.TH, SUH-1.6VR2.TH,
1
SUH-2VR
SU-1VR.TH, SU-1.6VR2.TH,
.TH
SU-2VR
1
SU-1.6VR2.TH-T, SU-2VR
[For SLH- • AR
NOTE:
This service manual descrides only for
the indoor unit and the connected outdoor
unit of SUH series. In PUMY series, refer
to the service manual outdoor unit and
"R-CONVERTER UNIT" for PUMY series.
CONTENTS
1. TECHNICAL CHANGE ·························2
2. PART NAMES AND FUNCTIONS ········2
3. SPECIFICATIONS ·································4
4. OUTLINES AND DIMENSIONS ··········34
5. WIRING DIAGRAM ·····························36
6. REFRIGERANT SYSTEM DIAGRAM·······39
7. DATA ···················································43
8. MICROPROCESSOR CONTROL ·······47
9. TROUBLESHOOTING ························56
10. 4-WAY AIR FLOW SYSTEM ··············63
11. DISASSEMBLY PROCEDURE···········65
12. PARTS LIST ·······································68
No. OC280
REVISED EDITION-B
.TH, SLH-1.6AR
.TH and
1
1
.TH are added in REVISED
1
.TH, SUH-2VR
.TH,
1
2
.TH, SU-1VR.TH-T,
1
.TH-T
1
.TH]
1
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Table of Contents
Related Manuals for Mitsubishi Electric SLH Series
Summary of Contents for Mitsubishi Electric SLH Series
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Page 1: Table Of Contents
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS No. OC280 REVISED EDITION-B TECHNICAL & SERVICE MANUAL Ceiling Cassettes Series SLH/SL Revision: •SLH-1AR .TH, SLH-1.6AR .TH and SLH-2AR .TH are added in REVISED Indoor unit EDITION-B. •Please void OC280 REVISED [Model names] [Service Ref.] EDITION-A. -
Page 2: Technical Change
TECHNICAL CHANGE SLH-1AR.TH SLH-1AR SLH-1.6AR.TH SLH-1.6AR SLH-2AR.TH SLH-2AR 1. The indoor controller board changed in order to connect with R-CONVERTER UNIT. 2. Outdoor units of the PUMY series are cnnectable via R-CONVERTER UNIT. PART NAMES AND FUNCTIONS Indoor (Main) Unit SLH-1AR.TH SL-1AR.TH SL-1AR.TH-T... -
Page 3: 1Ar.th-T
Remote controller SET TEMPERATURE button SET TEMPERATURE button sets and any desired room temperature. ON/OFF WARM COOL ON / OFF button Pushing button starts SELECT operation. Pushing again AUTO COOL TIMER SELECT button stops operation. VANE TIME HEAT Used for selecting timed starting or stopping. -
Page 4: Specifications
SPECIFICATIONS SLH-1AR.TH SLH-1AR SLH-1.6AR.TH SLH-1.6AR Service Ref. SUH-1VR.TH SUH-1.6VR2.TH Function Cooling Heating Cooling Heating Power supply Single phase, 220-240V, 50Hz Capacity 2.5-2.5 3.0-3.1 4.0-4.1 4.5-4.6 Capacity Dehumidification — — Air flow 4.5-4.3 4.7-4.5 7.5-7.5 7.1-7.1 Running current 970-1010 1010-1050 1600-1700 1510-1610 Power input —... - Page 5 SLH-2AR.TH SLH-2AR Service Ref. SUH-2VR SUH-2VR Function Cooling Heating Power supply Single phase, 220-240V, 50Hz Capacity 5.0-5.1 5.4-5.5 Capacity Dehumidification — Air flow Running current 10.2-9.8 10.0-9.4 Power input 2230-2310 2180-2220 Auxiliary heater A(kW) — — Electrical Power factor 99-98 99-98 data Starting current...
- Page 6 SL-1AR.TH SL-1.6AR.TH SL-1AR.TH-T SL-1.6AR.TH-T Service Ref. SU-1VR.TH SU-1.6VR2.TH SU-1VR.TH-T SU-1.6VR2.TH-T Function Cooling Cooling Power supply Single phase, 220-240V, 50Hz 2.6-2.6 4.0-4.1 Capacity Capacity Dehumidification Air flow 4.6-4.4 7.7-7.7 Running current Power input 990-1030 1640-1740 Auxiliary heater — — A(kW) Electrical Power factor 98-98 97-94...
- Page 7 SL-2AR.TH SL-2AR.TH-T Service Ref. SU-2VR SU-2VR .TH-T Function Cooling Power supply Single phase, 220-240V, 50Hz Capacity 5.1-5.2 Dehumidification Capacity Air flow Running current 10.6-10.0 Power input 2300-2360 Auxiliary heater — A(kW) Electrical Power factor 99-98 data Starting current 35-38 Compressor motor current 9.73-9.51 Fan motor current 0.62-0.65...
- Page 8 PERFORMANCE DATA COOLING operation(220V) SLH-1AR CAPACITY : 2.5 kW INPUT : 970 W SHF : 0.75 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.59 1.67 0.57 2.81 1.60 0.57 2.70 1.54 0.57...
- Page 9 PERFORMANCE DATA COOLING operation(220V) SLH-1AR CAPACITY : 2.5 kW INPUT : 970 W SHF : 0.75 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.45 1.40 0.57 2.25 1.28 0.57 1009 2.08 1.18 0.57 1048 2.58...
- Page 10 PERFORMANCE DATA COOLING operation(240V) SLH-1AR CAPACITY : 2.5 kW INPUT : 1010 W SHF : 0.75 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.60 1.48 0.57 2.94 1.67 0.57 2.81 1.60 0.57...
- Page 11 PERFORMANCE DATA COOLING operation(240V) SLH-1AR CAPACITY : 2.5 kW INPUT : 1010 W SHF : 0.75 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.45 1.40 0.57 2.25 1.28 0.57 1050 2.08 1.18 0.57 1091 2.58...
- Page 12 PERFORMANCE DATA COOLING operation(220V) SLH-1.6AR CAPACITY : 4.0 kW INPUT : 1600 W SHF : 0.69 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.70 2.40 0.51 1280 4.50 2.30 0.51 1344 4.32...
- Page 13 PERFORMANCE DATA COOLING operation(220V) SLH-1.6AR CAPACITY : 4.0 kW INPUT : 1600 W SHF : 0.69 OUTDOOR D.B.(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT D.B.(;) W.B.(;) 3.92 2.00 0.51 1568 3.60 1.84 0.51 1664 3.32 1.69 0.51 1728...
- Page 14 PERFORMANCE DATA COOLING operation(240V) SLH-1.6AR CAPACITY : 4.1 kW INPUT : 1700 W SHF : 0.69 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.82 2.46 0.51 1360 4.61 2.35 0.51 1428 4.43...
- Page 15 PERFORMANCE DATA COOLING operation(240V) SLH-1.6AR CAPACITY : 4.1 kW INPUT : 1700 W SHF : 0.69 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 1.88 3.40 1.74 0.51 1836 4.02 2.05 0.51 1666 3.69 0.51 1768...
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Page 16: Slh-2Ar
PERFORMANCE DATA COOLING operation(220V) SLH-2AR CAPACITY : 5.0 kW INPUT : 2230 W SHF : 0.64 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 5.88 2.70 0.46 1784 5.63 2.59 0.46 1873 5.40... - Page 17 PERFORMANCE DATA COOLING operation(220V) SLH-2AR CAPACITY : 5.0 kW INPUT : 2230 W SHF : 0.64 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.90 2.25 0.46 2185 4.50 2.07 0.46 2319 4.15 1.91 0.46 2408...
- Page 18 PERFORMANCE DATA COOLING operation(240V) SLH-2AR CAPACITY : 5.1 kW INPUT : 2310 W SHF : 0.64 OUTDOOR D.B.(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT D.B.(;) W.B.(;) 5.99 2.76 0.46 1848 5.74 2.64 0.46 1940 5.51...
- Page 19 PERFORMANCE DATA COOLING operation(240V) SLH-2AR CAPACITY : 5.1 kW INPUT : 2310 W SHF : 0.64 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.23 1.95 0.46 2495 5.00 2.30 0.46 2264 4.59 2.11 0.46 2402...
- Page 20 PERFORMANCE DATA COOLING operation(220V) SL-1AR CAPACITY : 2.6 kW INPUT : 990 W SHF : 0.73 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 1.61 0.55 2.81 1.54 0.55 2.70 1.49 0.55 3.06...
- Page 21 PERFORMANCE DATA COOLING operation(220V) SL-1AR CAPACITY : 2.6 kW INPUT : 990 W SHF : 0.73 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.55 1.40 0.55 2.34 1.29 0.55 1030 2.16 1.19 0.55 1069 1.07...
- Page 22 PERFORMANCE DATA COOLING operation(240V) SL-1AR CAPACITY : 2.6 kW INPUT : 1030 W SHF : 0.73 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.06 1.68 0.55 2.93 1.61 0.55 2.81 1.54 0.55...
- Page 23 PERFORMANCE DATA COOLING operation(240V) SL-1AR CAPACITY : 2.6 kW INPUT : 1030 W SHF : 0.73 OUTDOOR D.B.(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT D.B.(;) W.B.(;) 2.55 1.40 0.55 1009 2.34 1.29 0.55 1071 2.16 1.19 0.55 1112...
- Page 24 PERFORMANCE DATA COOLING operation(220V) SL-1.6AR CAPACITY : 4.0 kW INPUT : 1640 W SHF : 0.69 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.20 1443 4.16 2.12 0.51 1509 4.70 2.40 0.51...
- Page 25 PERFORMANCE DATA COOLING operation(220V) SL-1.6AR CAPACITY : 4.0 kW INPUT : 1640 W SHF : 0.69 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.92 2.00 0.51 1607 3.60 1.84 0.51 1706 3.32 1.69 0.51 1771...
- Page 26 PERFORMANCE DATA COOLING operation(240V) SL-1.6AR CAPACITY : 4.1 kW INPUT : 1740 W SHF : 0.69 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.17 1601 4.82 2.46 0.51 1392 4.61 2.35 0.51...
- Page 27 PERFORMANCE DATA COOLING operation(240V) SL-1.6AR CAPACITY : 4.1 kW INPUT : 1740 W SHF : 0.69 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.02 2.05 0.51 1705 3.69 1.88 0.51 1810 3.40 1.74 0.51 1879...
- Page 28 PERFORMANCE DATA COOLING operation(220V) SL-2AR CAPACITY : 5.1 kW INPUT : 2300 W SHF : 0.64 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 5.99 2.76 0.46 1840 5.74 2.64 0.46 1932 5.51...
- Page 29 PERFORMANCE DATA COOLING operation(220V) SL-2AR CAPACITY : 5.1 kW INPUT : 2300 W SHF : 0.64 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 5.00 2.30 0.46 2254 4.59 2.11 0.46 2392 4.23 1.95 0.46 2484...
- Page 30 PERFORMANCE DATA COOLING operation(240V) SL-2AR CAPACITY : 5.2 kW INPUT : 2360 W SHF : 0.64 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 6.11 2.81 0.46 1888 5.85 2.69 0.46 1982 5.62...
- Page 31 PERFORMANCE DATA COOLING operation(240V) SL-2AR CAPACITY : 5.2 kW INPUT : 2360 W SHF : 0.64 OUTDOOR D.B.(;) INDOOR INDOOR D.B.(;) W.B.(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 5.10 2.34 0.46 2313 4.68 2.15 0.46 2454 4.32 1.99 0.46 2549...
- Page 32 PERFORMANCE DATA HEATING operation(220V) SLH-1AR CAPACITY : 3.0 kW INPUT : 1010 W OUTDOOR W.B.(;) INDOOR D.B.(;) INPUT INPUT INPUT INPUT INPUT INPUT INPUT 1.89 2.28 2.67 3.06 3.45 1020 3.81 1050 4.20 1071 1.80 2.16 2.55 2.91 1000 3.30 1050 3.66 1081...
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Page 33: 1.6Ar.th
NOISE CRITERION CURVES <50Hz> <50Hz> SLH-1.6AR.TH SLH-1AR.TH NOTCH SPL(dB) LINE NOTCH SPL(dB) LINE SLH-1.6AR SLH-1AR SL-1.6AR.TH SL-1AR.TH SL-1.6AR.TH-T SL-1AR.TH-T 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... -
Page 34: Outlines And Dimensions
OUTLINES AND DIMENSIONS SLH-1AR.TH SLH-1AR Unit : mm SLH-1.6AR.TH SLH-1.6AR SLH-2AR.TH SLH-2AR SL-1AR.TH SL-1.6AR.TH SL-2AR.TH SL-1AR.TH-T SL-1.6AR.TH-T SL-2AR.TH-T... - Page 35 REMOTE CONTROLLER 17.5 ON/OFF WARM COOL SELECT AUTO COOL VANE TIME HEAT MODE RESET Installation area • Area in which the remote controller is not exposed direct sunshine. • Area in which there is no nearby heating source. • Area in which the remote controller is not exposed to cold (or hot) winds. •...
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Page 36: Wiring Diagram
WIRING DIAGRAM SLH-1AR.TH SLH-1.6AR.TH SLH-2AR.TH CIRCUIT BREAKER CN21 CND(POWER) (PIPE) RT12 FUSE CN20 GRN/YLW (HEATER) (INTAKE) RT11 POWER SUPPLY CN31 220-240V ZNR1 (PUMP) (DRAIN) 50Hz TRANS 12VDC SKY BLU FAN1 DC13.1V PINK (FAN) 220-240V~ TO OUTDOOR CN90 UNIT (WIRELESS) CONNECTING FAN2(FAN) GRN/YLW CN6V... - Page 37 SLH-1AR SLH-1.6AR SLH-2AR CIRCUIT BREAKER CN21 CND(POWER) (PIPE) RT12 FUSE GRN/YLW CN20 (HEATER) (INTAKE) POWER SUPPLY RT11 CN31 220-240V 220V ZNR1 (PUMP) (DRAIN) 50Hz 60Hz TRANS 12VDC SKY BLU FAN1 DC13.1V (FAN) PINK 220-240V~ TO OUTDOOR CN90 (WIRELESS) UNIT CONNECTING FAN2(FAN) GRN/YLW CN6V...
- Page 38 SL-1AR.TH SL-1AR.TH-T SL-1.6AR.TH SL-1.6AR.TH-T SL-2AR.TH SL-2AR.TH-T CIRCUIT BREAKER CND(POWER) CN21 (PIPE) RT12 FUSE CN20 GRN/YLW (HEATER) (INTAKE) RT11 POWER SUPPLY CN31 220-240V ZNR1 (DRAIN) (PUMP) 50Hz TRANS 220-240V~ SKY BLU FAN1 DC13.1V (FAN) PINK 220-240V~ TO OUTDOOR CN90 UNIT (WIRELESS) CONNECTING FAN2 (FAN)
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Page 39: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM SLH-1AR.TH SLH-1AR SUH-1VR.TH Refrigerant pipe [9.52 Strainer 1 Reversing valve (Option) (#100) INDOOR OUTDOOR (with heat insulator) Muffler UNIT UNIT Strainer Stop valve Indoor (#50) (with service port) heat Outdoor Flared connection exchanger heat exchanger Indoor coil thermistor RT12 Pressure... - Page 40 SL-1AR.TH SL-1AR.TH-T SU-1VR.TH SU-1VR.TH-T INDOOR UNIT OUTDOOR UNIT Refrigerant pipe [9.52 (Option) (with heat insulator) Stop valve Strainer Indoor (#50) (with service port) heat Outdoor Flared connection exchanger heat exchanger Indoor coil thermistor (RT12) Distributor (With strainer) Compressor Room temperature Flared connection thermistor (#100)
- Page 41 MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE Models Length : m(ft) Piping size O.D. : mm (in.) Indoor unit Outdoor unit Liquid SLH-1AR.TH, SLH-1AR SUH-1VR.TH {9.52(3/8) SL-1AR.TH SU-1VR.TH SL-1AR.TH-T SU-1VR.TH-T SLH-1.6AR.TH, SLH-1.6AR SUH-1.6VR2.TH 20(66) {12.7(1/2) {6.35(1/4) SL-1.6AR.TH SU-1.6VR2.TH SL-1.6AR.TH-T SU-1.6VR2.TH-T SLH-2AR.TH, SLH-2AR SUH-2VR...
- Page 42 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 valve on the side of the outdoor unit gas pipe. (The stop 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 valve on the gas pipe side of the outdoor unit.
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Page 43: 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% (198~264V), 50Hz (2) AIR FLOW... - Page 44 11.4 15.4 10.4 14.0 12.6 11.3 10.1 (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).
- Page 45 SLH-2AR.TH SLH-2AR .TH / SUH-2VR .TH SUH-2VR (MPa) (kgf/F) 220V 240V 15 18 20 30 32 35(:) 15 18 20 30 32 35(:) Ambient temperature (:) / Ambient humidity (%) Ambient temperature (:) / Ambient humidity (%) SL-1AR.TH / SU-1VR.TH SL-1AR.TH-T / SU-1VR.TH-T (kgf/F) (MPa)
- Page 46 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: SLH-1AR.TH SLH-1AR .TH / SUH-1VR.TH 220V 240V 25(:) Ambient temperature (:) SLH-1.6AR.TH SLH-1.6AR .TH / SUH-1.6VR2.TH 220/240V 25(:) Ambient temperature (:) SLH-2AR.TH SLH-2AR...
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Page 47: Microprocessor Control
MICROPROCESSOR CONTROL 1. COOL operation <How to operate> 1 Press POWER ON / OFF button. 2 Press MODE SELECT button to set operation mode to COOL. ON/OFF ON/OFF WARM COOL WARM COOL Each time the MODE SELECT button is pressed the DISPLAY “ ”... - Page 48 (5) Auto vane control Auto vane position is set to 30 degrees airflow at the start-up of COOL operation. It can then be changed by the remote controller. (a) Stop mode (fixed operation) ( i ) At start-up of COOL operation, the auto vane is set to 30 degrees airflow direction. ( ii ) Discharge direction can be changed with button.
- Page 49 2. DRY operation <How to operate> 1 Press POWER ON / OFF button. 2 Press MODE SELECT button to set operation mode to DRY. ON/OFF ON/OFF WARM COOL WARM COOL Each time the MODE SELECT button is pressed the display “ ” on the remote SELECT SELECT controller moves.
- Page 50 (4) Auto vane control Auto vane position is set to 30 degrees airflow at the start-up of DRY operation. It can then be changed by the remote con- troller. (a) Stop mode (fixed operation) ( i ) At start-up of DRY operation, the auto vane is set to 30 degrees airflow direction. ( ii ) Discharge direction can be changed with button.
- Page 51 3. HEAT operation (Only SLH-1, 1.6, 2AR) <How to operate> 1 Press POWER ON / OFF button. 2 Press MODE SELECT button to set operation mode to HEAT. ON/OFF Each time the MODE SELECT button is pressed the display “ ” on the remote WARM COOL controller moves.
- Page 52 (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 53 (6) Defrosting Defrosting of outdoor heat exchanger is controlled by dicer 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 54 4. FAN operation (Only SL-1, 1.6, 2AR) <How to operate> 1 Press POWER ON / OFF button. 2 Press MODE SELECT button to set operation mode to FAN. ON/OFF WARM COOL NOTE : Temperature can not be set in FAN operation. SELECT COOL VANE...
- Page 55 7. TEST RUN Measure an impedance between the power supply terminal block on the outdoor unit and the ground with a 500 V Megger and check that it is equal to or greater than 1.0MΩ. • Before performing the test run, recheck for any wrong wiring. Wrong wiring prevents normal operation or results in blown fuse disabling operation.
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Page 56: Troubleshooting
TROUBLESHOOTING 1. Cautions on troubleshooting (1) Before troubleshooting, check the followings: 1Check the power supply voltage. 2Check the indoor/outdoor connecting wire for mis-wiring. (2) Take care the followings during servicing. 1 Before servicing the air conditioner, be sure to first turn off the remote controller to stop the main unit, and then turn off the breaker. - Page 57 From the preceding page. Blinking Phenomenon Cause Countermeasure frequency Freezing protection is 1) Short cycle of air cycle 1) Clear obstructions from air cycle. blinking working. 2) Dirty air filter 2) Clean the air filter 3) Damaged fan 3) Check the fan 4) Abnormal refrigerant 4) Check the refrigerant temperature.
- Page 58 Check of indoor controller board and indoor fan motor Operation lamp blinks once in a fixed period. 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 the connecting wire between the...
- Page 59 From the preceding page. The switch of remote controller does not work. Check the followings. Is the connecting Is the varistor on Is the fuse on the •The display on the remote controller does wire between the the indoor controller indoor controller not appear on the screen.
- Page 60 3. Test point of indoor controller board Indoor electronic control board Indoor coil thermistor (RT12) Room temperature thermistor (RT11) Drain sensor (DS) Indoor coil thermistor (RT12) Room temperature thermistor (RT11) < Thermistor for lower temperature > Power supply input 220-240V AC Fuse 250V AC 3.15A -20 -10 0 10 20 30 40 50...
- Page 61 4. Trouble criterion of main parts SLH-1AR.TH SLH-1.6AR.TH SLH-2AR.TH SLH-1AR SLH-1.6AR SLH-2AR SL-1AR.TH SL-1.6AR.TH SL-2AR.TH SL-1AR.TH-T SL-1.6AR.TH-T SL-2AR.TH-T Part name Check method and criterion Room temperature Measure the resistance with a tester. thermistor (Part temperature 10°C ~ 30°C) (RT11) Normal Abnormal Indoor coil thermistor 4.3kΩ~9.6kΩ...
- Page 62 <Thermistor Characteristic graph> Room temperature thermistor(RT11) < Thermistor for lower temperature > Thermistor for Indoor coil thermistor(RT12) lower temperature Thermistor R =15k' ± 3% Fixed number of B=3480k' ± 2% Rt=15exp { 3480( 273+t 15k' 9.6k' 6.3k' 5.2k' 4.3k' 3.0k' -20 -10 0 10 20 30 40 50 Temperature (:)
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Page 63: Way Air Flow System
4-WAY AIR FLOW SYSTEM 1. Fresh air intake (Location for installation) At the time of installation, use the duct holes (cut out) located at the positions shown in following diagram, as and when required. Fresh air intake Detail drawing of fresh air intake [100 [73.4 3-[2.8 hole... - Page 64 4. Fixing of horizontal vane Horizontal vane of each air outlet can be fixed according to the environment, which is installed. Setting procedure 1) Turn off a main power supply (Turn off a breaker). 2) Disconnect the vane motor connector of the direction of the arrow with pressing the unlocking button as shown in figure below.
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Page 65: Disassembly Procedure
DISASSEMBLY PROCEDURE SLH-1AR.TH SLH-1.6AR.TH SLH-2AR.TH SLH-1AR SLH-1.6AR SLH-2AR SL-1AR.TH SL-1.6AR.TH SL-2AR.TH Be careful on removing heavy parts. SL-1AR.TH-T SL-1.6AR.TH-T SL-2AR.TH-T OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 1. Removing the air intake grille Figure 1 (1) Slide the knob of air intake grille to the direction of the arrow 1 to open the air intake grille. - Page 66 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 5. Remove the room temperature thermistor Photo 4 (1) Remove the panel. (See photo 2) (2) Pull out the room temperature thermistor from the drain pan. Connectors (3) Remove the 2 screws fixed to the control box cover, and remove the control box cover.
- Page 67 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 9. Removing the drain pump and drain sensor Photo 7 Cover Screw (1) Remove the panel. (See photo 2) (2) Remove the drain pan.(See photo 4) (3) Remove the 2 screws fixed to the control box cover, and Control remove the control box cover.
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Page 68: Parts List
PARTS LIST FUNCTIONAL PARTS SLH-1AR.TH SLH-1AR SLH-1.6AR.TH SLH-1.6AR SLH-2AR.TH SLH-2AR SL-1AR.TH SL-1.6AR.TH SL-2AR.TH SL-1AR.TH-T SL-1.6AR.TH-T SL-2AR.TH-T ON/OFF ON/OFF WARM COOL WARM COOL SELECT SELECT AUTO COOL COOL HEAT VANE TIME VANE TIME MODE MODE RESET RESET SLH-1AR.TH SL-1AR.TH SL-1.6AR.TH SLH-1.6AR.TH SL-2AR.TH SLH-2AR.TH SL-1AR.TH-T... - Page 69 Q'ty/set Price SLH- Wiring Recom- Remarks Parts No. Specification Parts name Diagram mended (Drawing No.) AR.TH Unit Amount AR.TH Symbol Q'ty AR.TH-T E07 104 290 BASE E07 104 124 DRUM-1 E07 104 808 LEG-1 E07 105 124 DRUM-2 E07 104 620 INDOOR HEAT EXCHANGER E07 105 620 INDOOR HEAT EXCHANGER...
- Page 70 ELECTRICAL PARTS SLH-1AR.TH SLH-1AR SLH-1.6AR.TH SLH-1.6AR SLH-2AR.TH SLH-2AR Q'ty/set Price SLH- Wiring Recom- Remarks Parts No. Specification Diagram mended Parts name (Drawing No.) Unit Amount Symbol Q'ty AR.TH E02 138 340 COMPRESSOR CONTACTOR E02 127 382 FUSE 250V 3.15A FUSE E02 661 385 VARISTOR ZNR1,2...
- Page 71 ELECTRICAL PARTS SL-1AR.TH SL-1AR.TH-T SL-1.6AR.TH SL-1.6AR.TH-T SL-2AR.TH SL-2AR.TH-T Q'ty/set Price Wiring Recom- Remarks Specification Parts No. Parts name Diagram mended (Drawing No.) Unit Amount AR.TH Symbol Q'ty AR.TH-T E02 138 340 COMPRESSOR CONTACTOR E02 127 382 FUSE 250V 3.15A FUSE E02 661 385 VARISTOR ZNR1,2...
- Page 72 PANEL PARTS SLP-2AL SLP-2AL-T Price Q'ty/set Wiring Recom- Remarks Parts No. Specification Parts name Diagram mended (Drawing No.) SLP-2AL Unit Amount Symbol Q'ty SLP-2AL-T E07 103 003 AIR OUTLET GRILLE E07 103 317 WIRELSS REMOTE CONTROL BOARD E07 103 037 AUTO VANE E07 103 975 CORNER PANEL...
- Page 74 HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2002 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in May 2003 No.OC280 REVISED EDITION-B 24 Distributed in Jan. 2003 No.OC280 REVISED EDITION-A PDF 141 New publication, effective May 2003.
- Page 75 Related Links Model Number: SLH-2AR1.TH SLH-1-2_Installation_Manual_(BG79S156H02) SLH-1-2_Parts_Catalog_(OC280B) SLH-1-2_Service_Manual_(OC280B)
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