Heat Controller A-MMC24FA-1, B-MMH12FA-1 manual Product doesnt operate with the remote controller

Troubleshooting Guide

Trouble 2	Product doesn't operate with the remote controller.
		Turn on main power.

While the compressor has been stopped, the compressor does not operate

due to the designed 3 minute delay, which is a protective function anytime the compres-

sor is stopped.

When the compressor is stopped, the Indoor Fan is driven by a low speed.

At this point the fan speed is not controlled by the remote controller.

(When operated in the Sleeping Mode, the fan speed is set to the low speed as designed.)

Caused by the remote controller.

When the mark ( ) is displayed in LCD

screen, replace battery.

When the detect switch (double key) inside the remote controller door is fault, it is impossible to operate temperature regulating(▲ / ▼) and wind speed selecting.

Caused by other parts except

the remote controller

Check the contact of CN-DISP 1 connector

Check DISP PCB Ass'y

-Voltage between CN1 ➀ - ➆ : DC +5V

Check the Display PCB Ass'y

• Check receiver ass'y

- 67 - Service Manual