Mitsubishi Heavy Industries SRK100VNXPZSX Technical Manual page 134

Error code Indoor display
Remote control:
E35
Outdoor unit
Outdoor unit
inverter PCB
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 unit control
PCB
• Indoor, outdoor unit
installation spaces
• Short-circuit of air on indoor,
outdoor units
• Fouling, clogging of heat
exchanger
• Excessive refrigerant amount
Note:
RUN light
ON
Green LED
Keeps flashing
control PCB
Yellow LED
Keeps flashing
5. Troubleshooting
* 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.
TIMER light
Content
Keeps flashing
Red LED
Cooling overload operation
1-time flash
Diagnosis
* For the characteristics of outdoor
heat exchanger temperature
Are the
thermistor, refer to E37.
characteristics of
outdoor heat exchanger
temperature thermistor
normal?
YES
Is the
unit operating in the
state of cooling
overload?
NO
Is the high
pressure control
normal?
YES
Is
the temperature
(measured actually) at
detection of error
correct?
133
- -
'17 • PAC-T-257
Countermeasure
Replace outdoor heat
NO
exchanger temperature
thermistor.
Check unit side.
• Isn't the air circulation
YES
of outdoor unit short-
circuited?
• Are installation spaces
adequate?
• Isn't there any fouling
or clogging on heat
exchanger?
Control operation check *
NO
Defective outdoor unit
NO
control PCB ➞ Replace.
Excessive refrigerant
YES
amount : Recharge
refrigerant by weighing
proper amount on a scale.