When Heating Does Not Operate - LG LM-2561C3L Service Manual

6. When Heating does not operate

Operate "Heating Mode(
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 related circuit of R02H(12.1K), R01H(1.0K), R04H(6.2K),
• Check the indoor room temperature is disconnected or not (about
• Check the indoor pipe temperature is disconnected or not (about
• The details of check are as followings
• Comp Relay.
Check point
Between two pin
of DC part in relay
for COMP.
Check the connector of intake and pipe sensor(thermistors)
R03H(1.0K).
10KΩ/at 25°C).
5KΩ/at 25°C).
Check the DC voltage on the PWB ASS'Y
Comp ON Comp OFF
About DC
Below DC 1V
12V
Turn ON Main Power
)" by setting the desired temperature of the
• 4-Way Relay
Check point
Between two pin
of DC part in relay
for 4-way.
Check Outdoor Unit
- 55 -
4-Way ON 4-Way OFF
Below DC 1V About DC 12V