LG HM121HF UB60 Owner's Manual page 61

Emergency operation is not automatically restarted after main
electricity power is reset.
• In normal condition, the product operating information is restored and automatically restarted
after main electricity power is reset.
• But in emergency operation, automatic re-start is prohibited to protect the product.
• Therefore, user must restart the product after power reset when emergency operation has been
running.
Error Code List
Description
Priority
1)
Heat pump
Availability of
Emergency
mode
Backup heater
Related error codes
1) If more than one trouble occurs ("Duplicated trouble"), the trouble with higher priority defines the
consequences (whether Emergency operation is possible or not).
2) Operation possible without optional function that has trouble. For instance, when DHW sensor is
broken (CH08), hot water heating is not available.
3) Heating operation only. Not possible to use Cooling function.
※ Energy consumption will increase while using Emergency mode. It should not be used for long
periods.
Critical
trouble /
Error
Problem
which can
stop system
operation,
and can be
resumed
only after
certificated
professional's
check.
1
X
cycle
X
03, 09, 14, 15,
16, 20, 232
EMERGENCY OPERATION
Heavy
trouble trouble
Compressor
cycle trouble.
In most case,
Emergency
this trouble
mode
is concerned
operation is
with sensor
performed
problems.
by optional
electric heater.
2
X
O
3)
01, 17, 18, 19,
02, 05, 06
Slight Option
trouble
A problem is
found for
Option
operation such
as water tank
heating.
3 4
O O
2)
O O
2)
08, 13
231
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