Loading ...
Loading ...
Loading ...
100 SEQUENCE of OPERATION
Temperature Sensors
To enter the defrost mode, the compressor must have acc-
When the defrost cycle begins, the following conditions take
place:
The system will exit the defrost cycle if any of the following
●
conditions are met:
Upon exiting the defrost cycle, the following conditions will
take place:
Protection Functions
1. Compressor High Temperature
The compressor discharge pipe sensor (exhaust temp)
senses the temperature of the refrigerant exiting the compressor
The sensed temperature received from the sensor
by the control circuitry will cause the compressor frequency
to increase or decrease (see chart below) If a temperature
of >= 23 °F is sensed for 2 seconds, an exhaust overheating
protection error code will be indicated at the outdoor unit
stop
Decreasing the frequency rapidly (1HZ/1second)
TTC (°F)
°F
212°F
°F
°F
°F
Decreasing the frequency slowly (1HZ conds)
The frequency doesn’t change
Increasing the frequency (1HZ conds)
Increasing the frequency (1HZ/1second)
2. Overheating Protection for Indoor Unit
sensor monitors coil temperature in both heating and cooling
modes, and causes the compressor to speed up, slow down, or
stop, according to the chart below
Four temperature sensors located in the outdoor unit provide
information to the outdoor unit PCB for control of the system
The outdoor ambient temperature sensor provides the
temperature of the air drawn into the condenser c
The defrost temperature sensor provides the temperature
sensed at the output of the condenser c
The suction line temperature sensor provides the tempera-
ture sensed at the inc
The compressor discharge sensor provides the temperature
sensed at the discharge pipe of the compr
To stop dry mode, press the power button to turn the system
o , or change to ano
Defrost Operation
Model Increasing slowly Holds value Decreasing slowly Decreasing rapidly Compressor stops
09K 40 /104 52 /126 57 /135 60 /140 63 /145
12K 40 /104 52 /126 57 /135 60 /140 63 /145
Overheating Protection for Indoor Unit
PAGE
Loading ...
Loading ...
Loading ...