Service
-
195
-
‘19 • HM-T-340
Alarm list
Alarm list
Alarm with automatic reset
Alarm
No.
Alarm text on the
display
Triggers alarm Resets alarm
157 Low lp cooling When the low pressure is less than 0.65MPa in
cooling mode.
When the low pressure is higher than 0.83MPa
and condenser supply (BT12) is greater than
14
℃
.
162 High condenser out
temperature
When condenser supply (BT12) is greater than
60
℃
.
When condenser supply (BT12) is lower than
58
℃
.
163 High condenser in
temperature
When condenser return (BT3) is greater than
55
℃
.
When condenser return (BT3) is lower than
53
℃
.
183 Defrosting in progress During defrost operation
271 Low otd tmp When outdoor air temperature is lower than
-20
℃
in heating mode.
When outdoor air temperature is higher than
-19
℃
for more than 1h in heating mode.
When outdoor air temperature is lower than
15
℃
in cooling mode.
When outdoor air temperature is higher than
16
℃
for more than 1h in cooling mode.
272 High otd tmp When outdoor air temperature is higher than
43
℃
.
When outdoor air temperature is lower than
42
℃
.
343 Low temp water out When condenser supply (BT12) is less than 5
℃
in cooling mode.
When condenser supply (BT12) is greater than
14
℃
.
When condenser supply (BT12) is less than
10
℃
in tank defrost mode.
When tank defrost is stopped.
347 Temp high press When the high pressure is greater than 4.15MPa. When the high pressure is lower than 3.15MPa.
418 Low temp water out When the temperature diff erence between BT12
and BT3 is bigger than threshold during tank
defrost.
After compressor stop and when temperature
diff erence between BT12 and BT3 is below
threshold.
419 Freeze prot. exch. defr. When low pressure (BP4) and condenser return
(BT3) are below threshold.
After compressor stop
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