LG HMC036KDT1 Service Manual - Page 40

Heating, operate

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Electronic Parts Troubleshooting Guide 6. When Heating does not operate Turn ON Main Power Operate "Heating Mode( )" by setting the desired temperature of the remote control is higher than one of the indoor temperature by 2°C at least. In heating Mode, the indoor fan operates in case the pipe temperature is higher than 28°C. Check the connector of intake and pipe sensor(thermistors) • Check the related circuit of RO2H(12.1K), RO1H(1.0K), RO4H(6.2K), RO3H(1.0K). • Check the indoor room temperature is disconnected or not (about 10KWat 25°C). • Check the indoor pipe temperature is disconnected or not (about 5KWat 25°C). Check if connection line (Indoor/Outdoor) is complied with Wiring Diagram. Good connection Bad connection Check Outdoor Unit (PCB Ass'y) Correct connection line 40 MPS Multi Air Conditioner

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Electronic
Parts
Troubleshooting
Guide
6.
When
Heating
does
not
operate
Turn
ON
Main
Power
Operate
"Heating
Mode(
)"
by
setting
the
desired
temperature
of
the
remote
control
is
higher
than
one
of
the
indoor
temperature
by
2°C
at
least.
In
heating
Mode,
the
indoor
fan
operates
in
case
the
pipe
temperature
is
higher
than
28°C.
Check
the
connector
of
intake
and
pipe
sensor(thermistors)
•
Check
the
related
circuit
of
RO2H(12.1K),
RO1H(1.0K),
RO4H(6.2K),
RO3H(1.0K).
•
Check
the
indoor
room
temperature
is
disconnected
or
not
(about
10KWat
25°C).
•
Check
the
indoor
pipe
temperature
is
disconnected
or
not
(about
5KWat
25°C).
Check
if
connection
line
(Indoor/Outdoor)
is
complied
with
Wiring
Diagram.
Good
connection
Check
Outdoor
Unit
(PCB
Ass'y)
Bad
connection
Correct
connection
line
40
MPS
Multi
Air
Conditioner