Heat Controller SMA - Troubleshooting; Display Board

Service manual
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
Infrared sign al receptor
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.
Heat Controller, Inc. Jackson, MI 49203
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