Filter
Top Products
No
No
The "filter check" lamp is on.
Press "filter check" button several times and check whether the problem stops.
Replace the main control board.
No
Button of remote controller doesn’t work.
No
Check the power supply.
Check whether the voltage of battery is lower than 2.2V.
No
Check whether the failure button is locked by button holder.
Yes
Replace with new batteries.
No
Check the wiring.
No
Check whether the transformer damaged
(
o
p
en circuit or short circuit
)
.
Yes
Replace the transformer.
No
Check whether other modes work normally.
Replace the display board.
Replace the main control board.
Check whether the buttons on the unit work normally.
Yes
Replace the remote controller.
No
Service Manual
Room Air Conditioner with R-410A
Heat Controller, Inc.
18