Service manual

210-10 ADL 49/62 599 75 60-77
(17) Discharge Temperature Protection
E4 is displayed on indoor unit
Yellow LED lamp of outdoor unit blinks for 7 times
When TB
discharge
≥98℃, the frequency is prohibited to increase;
When TB
discharge
≥103℃, the compressor operates at decreased frequency;
When TB
discharge
≥110℃, the compressor stops operation;
When TB
discharge
≤90, when compressor has stopped operation for 3min, it will resume operation.
# Check if discharge temperature meets the above conditions of protection.
(18) Overload Protection
H3 is displayed on indoor unit
Yellow LED lamp of outdoor unit blinks for 8 times.
# Check the following points:
Refrigerant charge.
Restrictions within the capillary tube.
Poor air flow across the indoor & outdoor coils.
Correct operation of the four way reversing valve.
# Check the Compressor Over Temperature connector plug located on the outdoor PCB for correct termination & continuity to
the over temperature protector.
# Check the over temperature protector located next to the three compressor terminals.
Note: This over temperature protector is “normally closed”.