Soleus Air KFTHP-12, KFTHP-09 Defrosting time chart, 6.“FAN” mode operation, wayValve control

Models: KFTHP-24 KFTHP-18 KFTHP-12 KFTHP-09

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Defrosting time chart

TCL Air Conditioner Service Manual

Defrosting time chart

Outdoor Fan

Revering Valve

Compressor Relay

ON

ON

ON

OFF

 

 

OFF

OFF

ON

ON

ON

OFF

ON

 

 

39S 5S Defrost Count MAX 12min 19S 15S

t

6.“FAN” mode operation

The indoor fan motor always turns on at the set speed and the vane motor turns on at the set fettle.

7.4-way Valve control

HEATINGON

COOLING/DRY OFF

The 4-way valve reverses for 5 seconds right before start-up of the compressor as following chart:

COOLING/DRY TO HEATING

HEATING TO COOLING/DRY

Compressor

4-way Valve

Outdoor Fan

5s

2min

8.“SLEEP” mode

When the SLEEP button is pressed, the SLEEP mode is selected as following:

The indoor fan speed is set at the low speed, the power lamp and the sleep lamp is on, the temperature off after 5 minutes.

When selecting COOLING/DRY operation with SLEEP mode, the set temperature will be raised by 1.8℉ 1 hour later and by 3.6℉ 2 hour later.

When selecting HEATING operation with SLEEP mode, the set temperature will be dropped by 1.8℉ 1 hour later and 3.6℉ 2 hour later.

After the System operates in SLEEP mode for 8 hours, it will stop automatically.

9.Fan motor control

(1)Rotational frequency feedback control

The indoor fan motor is equipped with a rotational frequency sensor, and outputs signal to the microprocessor to feedback the rotational frequency. Comparing the current rotational frequency with the target rotational frequency, the microprocessor adjusts fan motor electric to make the current rotational frequency close to the target rotational frequency. With this control, when the fan speed is switched, the rotational frequency changes smoothly.

(2)When the rotational frequency feedback signal has not output for 5 seconds (or when the microprocessor can’t detect the signal for 5 seconds), the fan motor is regarded locked-up. Then the electric current to the fan

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Soleus Air KFTHP-12 Defrosting time chart, 6.“FAN” mode operation, wayValve control, 8.“SLEEP” mode, Fan motor control