Haier MRV II - Page 115

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Part 3
voltage is too low
20
20
20
20
20
20
digital
tube
indication
on master
unit
indication
on wired
controller
(hex)
failure code definition
failure description
DCCT faulty
incorrect wiring
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53
20
20
radiator sensor failure
current sensor broken down
before startup, detect if the sensor is in short circuit or in
open circuit. 2 minutes and 50 seconds later after unit stops,
resume.
radiator fan broken down
69
20
before startup, the sensor is in short circuit or in open circuit.
2 minutes and 50 seconds later after unit stops, resume.
detecting VDC is less than 289V. 2 minutes and 50 seconds
later after unit stops, resume.
STANDBY state keeps for 10 minutes. 2 minutes and 50
seconds later after unit stops, resume.
in running, H/W of ACCT is faulty. 2 minutes and 50 seconds
later after unit stops, resume.
in running, H/W of ACCT is faulty. 2 minutes and 50 seconds
later after unit stops, resume.
ACCT faulty
58 20
IPM faulty
in running, IPM output is faulty. 2 minutes and 50 seconds
later after unit stops, resume.
59 20
VDC faulty
in running, H/W of VDC is faulty. 2 minutes and 50 seconds
later after unit stops, resume.
60 20
logic problem
when startup or running, PWM output is abnormal, 2 minutes
and 50 seconds later after unit stops, resume.
61 20
IPM in short circuit or the
earthing is short circuit
IPM in short circuit or earthing in short circuitl, 2 minutes
and 50 seconds later after unit stops, resume.
62 20
load is short circuit
load in short circuit, 2 minutes and 50 seconds later after
unit stops, resume.
ACCT wiring is faulty, 2 minutes and 50 seconds later after
unit stops, resume.
overload
current exceeds the limitation for 10 minutes, 2 minutes
and 50 seconds later after unit stops, resume.
65 20
DCCT sensor detecting
abnormal
in startup, DCCT current is less than 6.5A. 2 minutes and
50 seconds later after unit stops, resume.
66 20
DCCT sensor broken down
before startup, DCCT voltage is out of control. 2 minutes
and 50 seconds later after unit stops, resume.
no communication for 4 minutes
67 20
communication abnormal
with fan motor driving board
68 20
DC fan motor driving board
IPM alarms
in communication the code byte is 0*20. 2 minutes and 50
seconds later after unit stops, resume.If it occurs 3 times
in an hour, confirm the alarm.
DC fan motor driving board
pressure too high protection
in communication the code byte is 0*04. 2 minutes and 50
seconds later after unit stops, resume.If it occurs 3 times
in an hour, confirm the alarm.
70
20
DC fan motor driving board
pressure too low protection
in communication the code byte is 0*08. 2 minutes and 50
seconds later after unit stops, resume.If it occurs 3 times
in an hour, confirm the alarm.
71 20
DC fan motor driving board
blocked
in communication the code byte is 0*01. 2 minutes and 50
seconds later after unit stops, resume.If it occurs 3 times
in an hour, confirm the alarm.
72 20
DC fan motor driving board
EEPROM faulty
in communication the code byte is 0*02. 2 minutes and 50
seconds later after unit stops, resume.If it occurs 3 times
in an hour, confirm the alarm.
73 20
DC fan motor driving board
detecting out of control
in communication the code byte is 0*10. 2 minutes and 50
seconds later after unit stops, resume.If it occurs 3 times
in an hour, confirm the alarm.