Friedrich FPHMR18A3A Service Manual page 43

Dehumidification mode
The dehumidifying mode is illustrated as follows:
62˚F
Dehumidifying area I: Operation at the frequency in the range (30–60Hz) according to DeltaT (difference between ambient and
indoor temperature).
Dehumidifying area II: The compressor stops for 5 minutes and operators for 5 minutes at the lowest frequency.
Dehumidifying area III: The compressor stops.
43
OPERATION
(Hz)
Deltat(°F)
32 30
33 30
34 40
35 50
36 60