Friedrich FPHFC36A3B Wi-Fi Service & Parts Manual page 68

Control Logic Description
Condenser High-tem perature Protection
DC -Inverter outdoor unit
AC will enter T3 protection if any of the following conditions is satisfied.
Condition1:
Cooling mode: When the outdoor coil temp. T3 keeps higher than T2 for 10 seconds, the
compressor and outdoor fan will shut off. When T3 is lower than T1, the compressor
and outdoor fan will restart up.
Condition2:
Heatin g mode: Wh en the indoor coil temp. T3 keeps higher than T2
compressor and outdoor fan will shut off. When T3 is lower than T1, the compressor
and outdoor fan will restart up.
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OPERATION
T3
TE1 0
TE1 1
Off
On
for 10 seconds, the