Mitsubishi Electric PKH18FK Technical & Service Manual page 37

(1) Compressor control
13-minute time delay
To prevent overload, the compressor will not start within 6, minutes after stop.
2The compressor runs when the the room temperature displayed on remote controller is lower than the set temperature.
The compressor stops when the the room temperature displayed on remote controller is equal to or higher than the set
temperature.
3The compressor stops in check mode or during protective functions.
4Overheat protection
<Start condition>
When the indoor coil thermistor reads 158°F or above, the overheat protection will start.
<Overheat protection>
The compressor stops for 6 minutes, and then restarts.
If the start condition is satisfied again within 10 minutes of compressor operation, both the indoor and outdoor units stop,
displaying a check code of "P6" on the remote controller.
<Termination conditions>
Overheat protection is terminated when the start condition is not satisfied again during the allowance (10-minute compres-
sor operation), when operation mode changes to other mode, or when thermostat turns OFF.
(2) Indoor fan control
(a) Nomal control
(!)The indoor fan runs on EXTRA-LOW speed during the thermostat OFF.
EXTRA-LOW speed can be changed to LOW or HIGH speed by setting the (J1-7, J1-8) If the indoor coil tempera-
ture becomes more than 9 degrees below the room temperature during the thermostat OFF, the indoor fan will stop.
After, when the indoor coil temperature becomes within 9 degrees of room temperature, the indoor fan will run on
EXTRA-LOW speed.
(@)Hot adjustment Hot adjustment is a warm-up for HEAT operation
<Start conditions>
The hot adjustment works under any of the follwing conditions.
HEAT operation starts.
Defrosting ends.
Thermostat turns ON.[Hot adjustment]
Initially, the indoor fan runs on EXTRA-LOW speed. When 5 minutes have passed or the indoor coil temperature
exceeds 95°F, the fan speed changes to LOW. Two minutes later, the hot adjustment ends. Then, the fan speed
depends on the remote controller setting.
(#)The indoor fan stops when the indoor coil temperature is within 9 degrees either way of room temperature.
($)To eliminate the remaining heat, the indoor fan runs for the first 1 minute after the booster heater is turned OFF.
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