Compressor Current Limit Protection; Cooling Mode; Heating Mode; Indoor / Outdoor Units Communication Protection - KOREL M2OC-18HFN8-Q Service Manual

Note: if the low voltage protection occurs and not resumes within 3 minutes, it will keep the protection always
after restart the machine.

9.5.4 Compressor current limit protection

Temperature interval of current limit is same as range of T4 limited frequency.

Cooling mode:

Heating mode:

9.5.5 Indoor / outdoor units communication protection

If the indoor units cannot receive the feedback signal from the outdoor units for 2 minutes, or If the outdoor
units cannot receive the feedback signal from any of the indoor units for 3 minutes, the unit ceases
operation and displays the failure.
9.5.6 High condenser coil temperature protection.
V O L T A G E
V O L T _ L T M _ F R E Q 1 _ A D D
V O L T _ L T M _ F R E Q 2 _ A D D
T 4
T 4
29
N o li m it
C o o lZ o n e 5
C o o lZ o n e 4
C o o lZ o n e 3
C o o lZ o n e 2
C o o lZ o n e 1
H e a t Z o n e 4
H e a t Z o n e 3
H e a t Z o n e 2
H e a t Z o n e 1