Compressor Discharge High Temperature Protection Control; Cooling Outdoor Air Temperature Control (Cool); Heating Outdoor Air Temperature Control (Heat) - Panasonic CU-4Z80TBE Service Manual

14.17 Compressor discharge high temperature protection control

This control detect compressor tank temperature (CU-4Z80/5Z90TBE) and perform the compressor frequency
restriction.
A
C
When the discharge temperature more than 108°C, the compressor stops.
If this conditions happens for 3 times within 30 minutes, "F97" is indicated.

14.18 Cooling Outdoor Air Temperature Control (Cool)


The compressor will be stopped to avoid compressor overloading.

14.19 Heating Outdoor Air Temperature Control (Heat)


The compressor will be stopped to avoid compressor overloading.
Comp stop
B
Comp freq
restricted
D
Comp freq free
Comp tank temp CU-4Z80/5Z90TBE
-10°C
Outdoor
Air
Temperature
-10°C
Outdoor
Air
Temperature
A
B
C
D
COMP. ON
-12°C
COMP. OFF
COMP. ON
-22°C
COMP. OFF
284
CU-4Z80/5Z90TBE
108.0°C
96.0°C
90.0°C
85.0°C