Vivax ACP-09CH25AEF, Service Manual

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8.3.5 PTC function
a. Open conditions: (If all the following conditions happen, the PTC heater will open)
¬
Running in heating mode(not including the defrosing mode)
¬
Compressor keeps running over 6 seconds.
¬
The PTC function is active.
¬
Indoor fan is on
¬
Indoor evaporator coil temperature T2 <47
¬
T1 <31
℃
b. Close conditions: (If one of the following conditions happen, the PTC heater will close)
¬
Running not in heating mode.
¬
PTC function is inactive.
¬
Compressor running time is less than 6 seconds.
¬
Indoor fan is off
¬
Indoor evaporator coil temperature T2 > 52 for 3 minutes.
¬
T1 > 33 for 3 minutes.
¬
Running in defrosting mode.
Note: If AC did not run in heating mode before and change to heating mode now, the PTC function will
be active.In this condition, the PTC function will close if you press the
“
turbo
”
button one time on
remote controller.
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