Haier MRV II Instruction Manual page 114

digital
indication
tube
on wired
indication
controller
on master
(hex)
unit
EEPROM failure of master unit
20
33
main chip 849
master unit discharging temp.
34 20
Td protection
master unit oil temp. too low
36 20
master unit high pressure
38 20
sensor Pd too low protection
master unit low pressure
39 20
sensor Ps too low protection
master unit high pressure
40 20
sensor Pd too high protection
discharging temp. sensor Td
43 20
protection
communication between
master unit main chip 849 and
44 20
communication chip 849
failure
communication between
20
46
connecting board and module
board failure
radiator failure
47 20
ACCT over current protection
48 20
(instant value)
ACCT over current protection
49 20
(virtual value)
over voltage
50 20
current detecting failure
51
20
failure code definition
EEPROM faulty, or being inserted conversely, with incorrect
part
Td sensor is over 120℃ for 10 seconds, unit stops and
alarms; 2 minutes and 50 seconds later, resumable. If it
occurs 3 times in an hour, confirm the alarm.
compressor is running, Toil < PS+10 for 4 minutes or Toil
<Ps+3 for 10 seconds, the unit stops and alarms; if it occurs
3 times in an hour, confirm the alarm. The failure resume
condition:
1. When Ta<=0℃, Toil>=Ps+10 and Toil >=6;
2.When Ta>0℃, Toil>=Ps+10 or Toil >=36
compressor is running, detecting Pd sensor is below 17.
8kg/cm , and compression ratio is below 2 for 5 minutes,
2
the unit stops and alarms. Not detect in the course of
defrosting, within 3 minutes after defrosting, oil return, within
5 minutes after oil return.
compressor is running, detecting Ps sensor is below 0.
5kg/cm for 10 seconds; in oil return, detecting Ps sensor
2
is below 0.3kg/cm
2
2 minutes and 50 seconds later after unit stops, resume.
compressor is running, detecting Pd sensor is over
40kg/cm for 10 seconds; the unit stops and alarms. 2 minutes
2
and 50 seconds later after unit stops, resume.If it occurs
3 times in an hour, confirm the alarm
compressor is running, Td<Pd+5 for 1 minute, the unit stops
and alarms. 2 minutes and 50 seconds later after unit stops,
resume.If it occurs 3 times in an hour, confirm the alarm.In
defrosting and within 3 minutes after defrosting, not alarm.
no communication for 4 minutes
no communication for 4 minutes
radiator temp. is over 95degree, the unit alarms. 2 minutes
and 50 seconds later after unit stops, resume.
ACCT sensor detects that he instant current peak value
between U and V is over 94A, 2 minutes and 50 seconds
later after the unit stops, resume.
ACCT sensor detects that he instant current peak value
between U and V is over 34Arms, 2 minutes and 50 seconds
later after the unit stops, resume.
VDC is over 817V, 2 minutes and 50 seconds later after
the unit stops, resume.
after compressor has run for 10 seconds, current among
U, V, W is below 1.5Arms, 2 minutes and 50 seconds later
after the unit stops, resume.
- 114 -
failure description
for 10 seconds, the unit stops and alarms.
Part 3