Mitsubishi Heavy Industries SRK100VNXWZRF Service Manual page 105

Error code Indoor display
Remote control:
E36
Outdoor unit
Outdoor unit
inverter PCB
1. Applicable model
Models FDC100
2. Error detection method
For the error detection method,
refer to compressor overheat
in protective control in the
protective control by controlling
compressor rotation speed of
microcomputer control function
for corresponding models.
3. Condition of error displayed
When discharge pipe
temperature anomaly is detected
2 times within 60 minutes or
this anomalous state is detected
60 minutes continuously
including compressor stop
4. Presumable cause
• Defective outdoor unit control
PCB
• Defective discharge pipe
temperature sensor
• Clogged filter
• Indoor, outdoor unit
installation spaces
• Short-circuit of air on indoor,
outdoor units
• Fouling, clogging of heat
exchanger
Note:
RUN light
ON
Green LED
Keeps flashing
control PCB
Yellow LED
Keeps flashing
5. Troubleshooting
* For the contents of control, refer to compressor overheat in protective control
in the protective control by controlling compressor rotation speed of micro-
computer control function for corresponding models.
TIMER light
Content
5-time flash
Red LED
1-time flash
(Models FDC100 only)
Diagnosis
* For the characteristics of discharge
pipe temperature sensor, refer to E39.
Are the
characteristics of
discharge pipe temperature
sensor normal?
YES
Is the
discharge pipe
temperature error persisted
during cooling/heating
operation?
NO
Is the
discharge pipe temperature
control normal?
YES
Is the
temperature (measured
actually) at detection of
error correct?
104
- -
'22 • PAC-SM-422
Discharge pipe
temperature error
Countermeasure
NO Replace discharge pipe
temperature sensor.
Insufficient refrigerant
YES
amount : Recharge
refrigerant by weighing
proper amount on a scale.
Control operation check *
NO
NO Defective outdoor unit
control PCB➞Replace.
Check unit side:
YES
• Isn't filter clogged?
• Are indoor, outdoor
unit installation spaces
adequate?
• Isn't there any short-
circuit of air?
• Isn't there any fouling,
clogging on indoor heat
exchanger?