MovinCool Climate Pro 18 Service Manual - Manual (Page 61)

Repair Section
61
Troubleshooting of Insufficient Cooling or Heating - Table 2
< NOTE >
Under heating mode operation, when the room temperature is higher than 68 °F (20 °C), the low
fan speed option is deactivated and switched to medium fan speed to prevent high pressure
protection activation.
Condition
Check Area Possible Cause Remedy Insufficient Cooling
or Heating
No hot air
during
HEAT
mode
operation LCD display
shows
HEAT
mode, but
operates in
COOL
mode. F1 fuse (1.5 A) F1 fuse (1.5 A) is blown. Replace the F1 fuse
(1.5 A).
4-way valve 4-way valve failure Replace the coil on the 4-
way valve.