Manualshelf

M-Series MUZ-GE Technical & Service Manual

ManualsBrandsMitsubishi ManualsCoolingM-Series - 15,000 BTU - Ductless Heat Pump System - Wall Mounted - 21.6 SEER - 11.2 HSPF
41424344454647484950
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9-1. CHANGE IN DEFROST SETTING (MUZ)
Changing defrost finish temperature
<JS> To change the defrost finish temperature, cut/solder the JS wire of the outdoor inverter P.C. board. (Refer to 10-6.1.)
Jumper
Defrost fi nish temperature
MUZ-GE09 MUZ-GE12 MUZ-GE15 MUZ-GE18 MUZ-GE18/24
JS
Soldered
(Initial setting)
41°F (5°C) 50°F (10°C) 41°F (5°C) 48°F (9°C) 50°F (10°C)
None
(Cut)
46°F (8°C) 55°F (13°C) 50°F (10°C) 64°F (18°C) 64°F (18°C)
9-2. PRE-HEAT CONTROL SETTING
PRE-HEAT CONTROL
When moisture gets into the refrigerant cycle, it may interfere the start-up of the compressor at low outside temperature.
The pre-heat control prevents this interference. The pre-heat control turns ON when the discharge temperature thermistor
is 68°F (20°C) or below. When pre-heat control turns ON, compressor is energized. (About 50 W)
Pre-heat control setting
<JK> ON: To activate the pre-heat control, cut the JK wire of the inverter P.C. board. (Refer to 10-6.1.)
OFF: To deactivate the pre-heat control, solder JK wire of the inverter P.C. board. (Refer to 10-6.1.)
NOTE: When the inverter P.C. board is replaced, check the Jumper wires, and cut/solder them if necessary.
9
SERVICE FUNCTIONS
MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA MUZ-GE18NA MUZ-GE24NA
MUZ-GE09NA2 MUZ-GE12NA2 MUZ-GE15NA2
MUZ-GE09NAH MUZ-GE12NAH MUZ-GE15NAH MUZ-GE18NAH
MUZ-GE09NAH2 MUZ-GE12NAH2 MUZ-GE15NAH2
MUY-GE09NA MUY-GE12NA MUY-GE15NA MUY-GE18NA MUY-GE24NA
MUY-GE09NA2 MUY-GE12NA2 MUY-GE15NA2
OBH549G