Maintenance and Service
Ownerʼs Manual
29
ENGLISH
Troubleshooting Tips! Save Time and Money!
Check the following points before requesting repairs or service.... If the malfunction persist, please contact your dealer.
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.
Steam is raised in unit.
Control panel display is faint, or
no display at all.
• Have you made a mistake in timer operation?
• Has the fuse blown or has the circuit breaker been tripped?
• If ʻCH 14ʼis displayed in the display panel, check whether the water pipe is
frost or remove the air in the PHEX by opening the air vent.
• 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.
• 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.
• Sound for the unit heat exchanger
- Durig the cooling operation, a sound may be heard from the indoor unit
heat exchanger due to water freezing or melting.
• Steam from heat exchanger
- During defrosting operation, ice on the heat exchanger is melted,
resulting in making steam.
• Has the circuit breaker been tripped?
Case
Explanation
Summary of Contents for MFL68026703
Page 30: ...30 Air to Water Heat Pump ...
Page 31: ......
