McQuay MWM Specifications Page 79
- Page / 99
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
75
Troubleshooting MWM-J-2011
Troubleshooting
Error Code / Fault Condition
When a malfunction of the air conditioner unit is detected, immediately switch off the main power supply before
proceeding with the following troubleshooting procedures.
The following are common fault conditions and simple troubleshooting tips. If any other fault conditions which
are not listed occur, contact your nearest local dealer. DO NOT attempt to troubleshoot the unit by yourself.
No Fault conditions Possible causes / corrective actions
1 The air conditioner unit will not resume after
power failure.
The auto restart function is not functioning.
Please turn on the unit with the wireless /
wired controller.
•
2 The compressor does not operate 3 minutes
after the air conditioner unit is started.
Protection against frequent starting.
Wait for 3 or 4 minutes for the compressor to
start operating by it self.
•
•
3 The airfl ow is too slow or room cannot be
cooled suffi ciently.
The air fi lter is dirty.
The doors and windows are opened.
The air suction and discharge of both indoor
and outdoor units are clogged or blocked.
The regulated temperature or temperature
setting is not low enough.
•
•
•
•
4 Discharge airfl ow has bad odor. Cigarettes, smoke particles, perfume and
others, which might have adhered onto the
coil, may cause odor.
Contact your nearest dealer.
•
•
5 Condensation on the front air grille of the indoor
unit.
This is caused by air humidity after an
extended period of operation.
The set temperature is too low. Increase the
temperature setting and operate the unit at
high fan speed.
•
•
6 Water fl owing out from the air conditioner. Switch off the unit and contact your nearest
dealer. This might be due to tilted installation.
•
7 Hissing airfl ow sound from the air conditioner
unit during operation.
Liquid refrigerant fl owing into the evaporator
coil.
•
8 The wireless controller display is dim. The batteries are discharged.
The batteries are not correctly inserted.
The assembly is not good.
•
•
•
9 Compressor operates continuously. Dirty air fi lter. Clean the air fi lter.
Temperature setting too low (cooling). Use
higher temperature setting.
Temperature setting too high (heating), Use
lower temperature setting.
•
•
•
10 No cool air comes out during cooling cycle, or
no hot air comes out during heating cycle.
Temperature setting too high (cooling). Use
lower temperature setting.
Temperature setting too low (heating). Use
higher temperature setting.
•
•
11 On heating cycle, warm air does not come out. Unit is in defrost mode. Heating operation will
resume after defrost cycle ends.
•
- Wall Mounted Split Systems 1
- Table of Contents 2
- Nomenclature 3
- Outdoor Unit 4
- M 5 LC 10 C R 4
- Product Line-Up 5
- Indoor Unit 6
- Features 9
- Application Information 10
- Model: MWM20J - MLC020C 11
- Refrigerant Circuit Diagram 11
- Model: MWM25J - MLC025C 12
- M5WM15JR - M5LC15CRJ 12
- 70034 095236 13
- Model: MWM025JR - ML 14
- Operation Guide 15
- Controller 15
- WARNING 16
- CAUTION 16
- Installation of Indoor Unit 17
- Required space 17
- Routing of Piping 18
- Mounting Installation Plate 18
- Water Drainage Piping 20
- Installation of Outdoor Unit 20
- Installation Clearance 21
- Refrigerant Piping 22
- Remove burr 23
- Swaging block 23
- Copper tube 23
- Filter Dryer 24
- (Mclecular-Sieve Type 24
- Note : R22 - Nil 24
- R410A - Nil 24
- (Mclecular-Sieve Type) 25
- Dip-pipe 27
- Invert cylinder 27
- Sound Data 28
- MWM09J/JR 29
- NC CURVES 29
- MWM15J/JR, M5WM15J/JR 30
- NC CURVES 30
- MWM25J/JR 31
- Performance Data 44
- Performance Data MWM-J-2011 45
- MWM-J-2011 Performance Data 46
- Cooling Only (R22) 50
- Model: MWM15J - MLC15C 51
- Cooling Mode 51
- Model: MWM20J - MLC020C 52
- Model: MWM25J - MLC025C 53
- Heat Pump (R22) 54
- Model: MWM09JR - MLC09CR 55
- Heating Mode 55
- Model: MWM15JR - MLC15CR 56
- Model: MWM20JR - MLC020CR 58
- Model: MWM25JR - MLC025CR 60
- Cooling Only (R410A) 62
- Model: M5WM15J - M5LC15CJ 63
- Heat Pump (R410A) 64
- Model: M5WM10JR - M5LC10CRJ 65
- Model: M5WM15JR - M5LC15CRJ 67
- Outline and Dimension 68
- Note: Dimension in mm 69
- For M5LC / MLC025C/CR 69
- Electrical Data 70
- Wiring Diagram 73
- 70034 108883 74
- 70034 101944 75
- 70034 108882 76
- Service and Maintenance 77
- Pre Start Up Maintenance 78
- Outdoor Models 78
- Troubleshooting 79
- MWM-J-2011 Troubleshooting 80
- IR Receiver 85
- Cool / Heat 85
- ON/OFF switch 85
- Exploded View and Part List 87
- INDOOR UNIT 88
- MODEL: MWM20/25J/JR 89
- OUTDOOR UNIT 90
- MODEL: MLC09C 90
- MODEL: MLC15C, M5LC10/15C 91
- MODEL: MLC09CR 92
- MODEL: MLC15CR, M5LC10/15CR 94
- MODEL: MLC020C/CR 95
- MODEL: MLC020C 96
- MODEL: MLC020CR 96
- MODEL: MLC025C/CR 97
- MODEL: MLC025C 98
- MODEL: MLC025CR 98
Related products and manuals for Split-system air conditioners McQuay MWM
(90 pages)© 2020, manymanuals.com. All rights reserved. | 1.196 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals