LG AH Series THERMA V Owner's Manual page 28

Maintenance and Service
Troubleshooting Tips! Save time and money!
Check the following points before requesting repairs or service.... If the malfunction persist, please contact your dealer.
Case
AWHP does not operate.
The room has a peculiar odor.
AWHP does not operate for
about 3 minutes when restart.
Does not cool or heat effectively.
The unit operation is noisy.
S team is raised in outdoor unit.
Control panel display is faint, or
no display at all.
28 Air-to-Water Heat Pump
• Have you made a mistake in timer operation?
• Has the fuse blown or has the circuit breaker been tripped?
• Check that this is not a damp smell exuded by the walls, carpet, furniture
or cloth items in the room.
• This is the protector of the mechanism.
• Wait about three minutes and operation will begin.
• The room may have been very hot when the AWHP was first turned on.
Allow time for it to cool down.
• Has the setting temperature been set incorrectly?
• Refrigerant flow sound
- While the system is being started or stopping, sound from the
refrigerant flow may be heard.
• Sound for the indoor unit heat exchanger
- During the cooling operation, a sound may be heard from the indoor
unit heat exchanger due to water freezing or melting.
• Water noise
- During starting or stopping of the unit, noise can appear in water piping
• During defrost
- Noise can appear in unit due to defrosting of water.
• Steam from outdoor heat exchanger
- During defrosting operation, ice on the outdoor heat exchanger is
melted, resulting in making steam.
• Has the circuit breaker been tripped?
Explanation