Friedrich FPHMR18A3A Service Manual page 51

Control Logic Description
Condenser High-temperature Protection
Conditions:
Cooling mode:
When the outdoor coil temp. sensor is higher than 142 F for more than 10 seconds, the compressor
and outdoor fan will shuto . When the sensor is lower than 122F, the compressor and outdoor
fan will restart up.
Hea ting mode:
When the indoor coil temp. sensor is lower than 40F for 10 seconds, the compressor
and outdoor fan will shuto . When the sensor rises above 55F, the compressor and outdoor
fan will restart up.
51
OPERATION
T3
TE 10
TE 11
Off
On