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5 operation of compressor – Klimaire KTHM015-E5H2 PTAC Service Manual User Manual

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If T2﹥TE7, this unit turns into the protection of compressor off , and quits this protection when T2≤TE9.

If T2﹥TE8,it turns into the protection of fan motor off , and quits this protection when T2≤TE9.

If T2﹥TE15, fan motor operates at low speed by force, then quits the operation and determines the high

or low speed by T4.

6.4.5. At the fan only mode, the fan always keeps on working, and the compressor/fan motor/heater stop

working.

6.5 Operation of compressor

6.5.1. The compressor operates at cooling mode as below:

(T1-Ts)

+0

-4

Compressor on

Operation conditon

Compressor off

T1≥Ts compressor on

T1≤Ts-4℉ compressor off

6.5.2. The compressor operates at heating mode:

(There are two ways of heating mode: Heat pump and cooling/Electric heater and cooling)

The electrical heater or compressor will be activated by sensing the difference between setting

temperature and the actual ambient room temperature.

TE7

TE8

TE15

TE9

Compressor

Fan motor

Fan motor
(low speed)

Compressor on

Fan motor on
(High/low speed is

determined by T4)

Compressor

Fan motor

Compressor on
Fan motor on

(High/low speed is
determined by T4)