Trane 4TXK6512G1000AA Service Manual page 166

9.4.3 Condenser overheat protection
In order to realize low pressure protection, the low pressure is controlled by simulating evaporating temperature:
When cooling, compare the evaporating temp. with the compressor suction temp. and choose the lower one (Teva
c) to simulate judgment.
Teva_c
-25°C
-30°C
-35°C
-40°C
-45°C
When heating, you can judge through comparing defrost temp. (Te) with environment temp. (Tc) and choose
the lower one (Teva h) .
Teva_h
-30°C
-35°C
-40°C
-45°C
-50°C
Normal running
The lowest running frequency 20HZ
The lowest running frequency 20HZ
The lowest running frequency 20HZ
he t
If it lasts 5 seconds, unit will stop and Alarm.
After standing by 3 minutes, unit will restart. If
it happens 3 times in 60 minutes, unit will stop
and alarm for ever. It will disappear if unit back
to power.
Normal running
The lowest running frequency 20HZ
The lowest running frequency 20HZ
The lowest running frequency 20HZ
If it lasts 5 seconds, unit will stop and Alarm.
After standing by 3 minutes, unit will restart. If
it happens 3 times in 60 minutes, unit will stop
and alarm for ever. It will disappear if unit back
to power.
135
in fr y 20
g q