10 Troubleshooting
10.1 Display board
For 9K model
Operation
The indicator flashes once every second after power is on and illuminates when the air conditioner is
in operation.
Timer indicator:
The indicator illuminates then TIMER is set ON.
PRE-DEF. indicator (For cooling & heating mode only)
The air conditioner starts defrosting automatically if outdoor unit frosts in heating operating.
At this time, PRE-DEF. indicator illuminates.
Auto indicator:
This indicator flashes when the air conditioner is in AUTO operation.
ECON indicator
This indicator illuminates while the air conditioner is in economic operation.
For 12K model
TIMER OPERATION
PRE- DEF
Operation
The indicator flashes once every second after power is on and illuminates when the air conditioner is
in operation.
Timer indicator:
The indicator illuminates then TIMER is set ON.
PRE-DEF. indicator (For cooling & heating mode only)
The air conditioner starts defrosting automatically if outdoor unit frosts in heating operating.
At this time, PRE-DEF. indicator illuminates.
Service manual
I nfrared sign al recept or
Heat Controller, Inc. Jackson, MI 49203
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