Mitsubishi Heavy Industries FDT28KXE6A Service Manual page 82

Error code
E36
Remote controller:
E36-1, 2 *1
7-segment display:
*1 E36-1: Tho-D1, E36-2: Tho-D2 *2 E36-1: 1 time flash, E36-2: 2 time flash
1. Applicable model
Outdoor unit
2. Error detection method
When anomalously high
temperature is detected by the
discharge pipe temperature
thermistor (Tho-D1, D2)
3. Condition of error displayed
When 130°C or higher is detected
by the discharge temperature
thermistor, the compressor
stops. After 3 minutesdelay,
the compressor starts again.
automatically, but if this anomaly
occurs 2 times within 60 minutes
after the initial detection, or
130°C or higher is detected
continuously for 60 minutes.
4. Presumable cause
• Discharge pipe temperature
anomaly
• SV1, 2 (liquid refrigerant
by-pass valve ) anomaly
• Beakage of coil
• Faulty main body.
• Outdoor control PCB anomaly
• Insufficient amount of
refrigerant
• Insufficient airflow volume
• Short-circuit of airflow
Note:
LED Green Red
Keeps flashing Stays Off
Indoor
Keeps flashing *2
Outdoor
5. Troubleshooting
Diagnosis
Save data for 30 minutes before stopping in Mente PC
Is the unit
installation environment
within the range of
limitation?
YES
Are the
refrigerant amount and
piping length
OK?
YES
Is the
insertion of the
thermistor connector into the
connector on outdoor
control PCB
OK?
YES
Is the
discharge pipe
temperature thermistor
OK?
YES
Reset the power supply and restart operation.
Does the error recur
when restarting?
YES
Is there
AC200V of output
signal for SV1, 2 from
outdoor control
PCB?
YES
Is the coil of
SV1, 2 energized?
YES
Does the
refrigerant flow through
SV1, 2 main
body?
YES
80
–
Discharge pipe temperature
Content
error (Tho-D1, D2)
NO
NO
NO
NO
NO
NO
NO
NO
–
Countermeasure
Check and save the data of
operating condition
Check the ROM version
Confirmation of SV1, 2 operation
Propose an improvement to
the customer.
Adjust the refrigerant
amount poperly
(Check whether the
refrigerant amount is
insufficient or not.)
(Check the gas leakage)
Insert connector securely.
Check if the characteristics
are correct by referring
the characteristics chart
of E39. And if necessary,
replace the discharge pipe
temperature thermistor.
Check it, as much as
possible, under the
operating conditions for
30 minutes before error
occurred.
Wait and see.
Continue to obtain data, if
possible.
(Keep connecting the
Mente PC)
Replace outdoor control
PCB
Replace the coil SV1, 2
Replace the SV1, 2 main body
(If there is no refrigerant in
liquid line, charge refrigerant
additionall)
Check refrigerant amount
again.