Haier MRV II - 3. Failure code

3 Failure code
Part 3
3.1 Inverter master outdoor failure code list
第五部分
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the sensor voltage is below 0.1V (open circuit) or over
4.8V (short circuit) for 1 minute, not alarm in defrosting
and within 3 minutes after defrosting.
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20
20
digital
tube
indication
on master
unit
indication
on wired
controller
(hex)
failure code definition
failure description
master unit defrosting temp.
sensor Te failure
master unit ambient temp.
sensor Ta failure
master unit suction temp.
sensor Ts failure
master unit discharging temp.
sensor Td failure
master unit oil temp. sensor
Toil failure
heat exchanger inlet temp.
Toci failure
master unit oil temp. too high
master unit high pressure
sensor Pd failure
master unit low pressure
sensor Ps failure
master unit low pressure
switch failure
master unit high pressure
switch failure
overcooling heat exchanger
outlet temp. Tsco failure
after compressor runs for 5 minutes, sensor voltage is
below 0.1V(open circuit) or over 4.8V (short circuit) for
1 minute, not alarm in defrosting or within 3 minutes after
defrosting
when compressor is running, oil temp. is no less than
80℃, unit stops and alarms for 4 minutes; after
compressor stops, when oil temp. is no more than 70
℃
for 1 minute, resumable. If the failure occurs 3 times
in an hour, confirm the alarm.
when compressor is running, if switch opens for 1 minute,
alarm; after the unit stops for 2 minutes and 50 seconds,
resumable. If the failure occurs 3 times in an hour, confirm
the alarm.
compressor stops, if detecting pressure switch for 30
seconds, alarm; after compressor is running for 10 minutes,
switch opens for 1 minute, alarm; if the failure occurs 3
times in an hour, confirm the alarm. Not detect in the
course of soft start, defrosting and within 3 minutes after
defrosting, oil return and within 5 minutes after oil return.
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20
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20
20
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20
20
20
the sensor voltage is below 0.1V (open circuit) or over
4.8V (short circuit) for 1 minute, not alarm in defrosting
and within 3 minutes after defrosting.
the sensor voltage is below 0.1V (open circuit) or over
4.8V (short circuit) for 1 minute, not alarm in defrosting
and within 3 minutes after defrosting.
the sensor voltage is below 0.1V (open circuit) or over
4.8V (short circuit) for 1 minute, not alarm in defrosting
and within 3 minutes after defrosting.
the sensor voltage is below 0.1V (open circuit) or over
4.8V (short circuit) for 1 minute, not alarm in defrosting
and within 3 minutes after defrosting.
the sensor voltage is below 0.1V (open circuit) or over
4.8V (short circuit) for 30 seconds, not alarm in defrosting
and within 3 minutes after defrosting.
the sensor voltage is below 0.1V (open circuit) or over
4.8V (short circuit) for 30 seconds, not alarm in defrosting
and within 3 minutes after defrosting.
the sensor voltage is below 0.1V (open circuit) or over
4.8V (short circuit) for 1 minute, not alarm in defrosting
and within 3 minutes after defrosting.
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