E35 Cooling Overload Operation - Mitsubishi Electric FDT125VNVF Technical Manual

Error code
Indoor control PCB
E35
Remote controller:
Outdoor control PCB
Outdoor inverter
1. Applicable model
All models
2. Error detection method
For the error detection method,
refer to the protective control by
controlling compressor rotation
speed and cooling high pressure
protective control of micro
computer control function for
corresponding models.
3. Condition of Error displayed
When outdoor heat exchanger
temperature anomaly is detected
5 times within 60 minutes or
this anomalous state is detected
60 minutes continuously
including compressor stop.
4. Presumable cause
• Defective outdoor heat
exchanger temperature
thermistor
• Defective outdoor control
PCB
• Indoor, outdoor unit
installation spaces
• Short-circuit of air on indoor,
outdoor units
• Fouling, clogging of heat
exchanger
• Excessive refrigerant amount
Note:
LED Green
Keeps flashing
Keeps flashing
Yellow LED or Red LED Green LED
PCB
Keeps flashing
5. Troubleshooting
outdoor heat exchanger
temperature thermistor
unit operating in the
(measured actually) at
detection of error
* For the contents of control, refer to the protective control by controlling
compressor rotation speed and cooling high pressure protective control of
micro computer control function for corresponding models.
Red
Content
Stays OFF
1 time flash
Cooling overload operation
Keeps flashing
Diagnosis
* For the characteristics of outdoor
heat exchanger temperature
Are the
thermistor, refer to E37.
characteristics of
NO
normal?
YES
Is the
YES
state of cooling
overload?
NO
Is the high
pressure control
NO
normal?
YES
Is
the temperature
NO
correct?
YES
388
- -
'12 • PAC-T-174
Countermeasure
Replace outdoor heat
exchanger temperature
thermistor.
Check unit side.
• Isn't the air circulation
of outdoor unit short-
circuited?
• Are installation spaces
adequate?
• Isn't there any fouling
or clogging on heat
exchanger?
Control operation check *
Defective outdoor control
PCB ➞ Replace.
Excessive refrigerant
amount : Recharge
refrigerant by weighing
proper amount on a scale.