Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 264

SCM-C
(4) Trouble shooting chart for the room temperature thermistor (Th
Unit Sensor
Room temperature
(1)
thermistor (Th ) except for
1
"continuous" thermal setting
Heat exchanger
thermistor (Th )
2
Note (1) When the room temperature thermistor (Th1) will not operate normally. Cooling or heating operation may be run continuously by putting the thermostat
setting on "CONTINUOUS".
(5) How to make sure of remote controller
(1)
Is remote
NO
controller
normal?
YES
Again pushing
operating switch
YES
Operating the unit?
NO
Does operating
backup switch
YES
Operating the unit
NO
Replace the display
YES
Operating the unit
NO
Remote controller
defects
262
Operation
Short circuit
Continuous Cooling operation
• Cannot be turned ON/OFF by thermostat
Cooling
• When FM1 is on, "AUTO" is continuously Hi
Cooling Cooling will not operate
Note (1) How to check the remote controller
Remote controller
defects
Abnormal is not
fount
Is control unit
normal
Is it normal
), heat exchanger thermistor (Th
1
Function
Cooling will not operate
• FM1: continuous operation
• CM, FM0: stopped
Cooling will operate
• Heat exchanger frost preventer begins to operate
• Cools alternately for 10 minutes, stopping for 3
minutes
(a) Press the reset switch of remote controller
(b)It is almost normal if entire display of remote controller
is shown after indication.
)
2
Broken connection