Lennox GCM07N User Manual

30
8.8.6 Indoor evaporator high-temperature protection at heating mode
Condition
T= Indoor exchanger temp.
Compressor Outdoor fan
T<TE8 On On
TE8<T<TE7 On Off
Indoor exchanger temp. up
T>TE7 Off Off
T>TE9 Off Off Indoor exchanger temp. down
T<TE9 On On
8.8.7. The louver opens to Standard Angle ANGLHEAT when power is on for the first time
8.9 Defrosting operation (Available for heating only).
8.9.1 Defrosting condition: Defrosting starts when either of the following ① & ② :
① A and B are satisfied:
A: The compressor keeps running for 40 minutes or more.
B: The temperature difference of evaporator and room temperature meets one of the following:

Temp. of evaporator---room temp.
Fan speed is high ≤TH
DEFROST
Fan speed is mid ≤TM
DEFROST
Fan speed is low ≤TL
DEFROST
Breeze Meet only if it is Breeze
② Calculate from the end of latest defrost, evaporator high temp. protection only closes outdoor fan
with the compressor still running. Add up to 90 minutes.
8.9.2 Defrosting time
If the temp. difference condition ① is satisfied for less than 40 minutes, this can be regarded as
severe frosting. The defrosting time is 10 minutes.
If the temp. difference condition ② is satisfied for more than 40 minutes, the defrosting time is 6
minutes.
If the temp. difference condition ① is satisfied out of 40 minutes, generally the defrosting time is 6
minutes, after three continuous 6-minute defrost, the fourth should be 10 minutes defrost. The
circulation is as following:
→ 7.5-minute defrost → 7.5-minute defrost → 7.5-minute defrost → 10-minute defrost →
8.9.3 Ending condition of defrosting
If one of following conditions is satisfied, end the defrost and turn into heating mode:

Lennox GCM07N Specifications

General

Brand	Lennox
Model	GCM07N
Category	Air Conditioner
Language	English