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250
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E36
E36
Discharge pipe temperature
error (Tho-D1)
Stays Off
1. Applicable model
5. Troubleshooting
Outdoor unit
Diagnosis Countermeasure
Is the unit
installation environment
within the range of
limitation?
Are the
refrigerant amount and
piping length
OK?
Is the
discharge pipe
temperature sensor
normal?
Save data for 30 minutes before stopping in Mente PC.
NO
NO
Is the
sensor connector
inserted to the PCB connector
properly?
NO
NO
Does it
recur after restarting
operation?
Reset the power and restart operation.
NO
YES
Check and save the data of
operating condition.
Check the ROM version.
Propose an improvement to
the customer.
Adjust the refrigerant
amount poperly.
(Check whether the
refrigerant amount is
(Check the gas leakage.)
Insert connectors securely.
Check if characteristics
are correct, referring to
the characteristics list
of E39. And if necessary,
replace the discharge pipe
temperature sensor.
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.)
Check refrigerant amount
again.
2. Error detection method
Detection of anomalously high
temperature by the discharge
pipe temperature sensor
3
.
Condition of error displayed
When the discharge pipe
temperature sensor detects
115°C or higher the compressor
stops. After 3-minute delay,
the compressor starts again
automatically, but if this
anomaly occurs 5 times within
60 minutes after the initial
detection.
4. Presumable cause
• Defective discharge pipe
temperature sensor
• Defective outdoor unit control
PCB
• Insufficient amount of
refrigerant
• Insufficient air flow volume
• Short-circuit
Note:
Error code
Remote control:
7-segment display:
LED Green Red
Indoor
Outdoor
Content
YES
YES
YES
YES
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