Fisher FSMED-124HFPL, Technical & Service Manual

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9.9.2 Defrosting time
If the temp. difference condition
①
is satisfied for less than 40 minutes, this can be regarded as
severe frosting. The defrosting time is 10 minutes.
If the temp. difference condition
②
is satisfied for more than 40 minutes, the defrosting time is 6
minutes.
If the temp. difference condition
①
is satisfied out of 40 minutes, generally the defrosting time is
6 minutes, after three continuous 6-minute defrost, the fourth should be 10 minutes defrost. The
circulation is as following:
→
7.5-minute defrost
→
7.5-minute defrost
→
7.5-minute defrost
→
10-minute defrost
→
9.9.3 Ending condition of defrosting
If one of following conditions is satisfied, end the defrost and turn into heating mode:
A. The defrost time has reached to 7.5 or 10 minutes.
B. The compressor current has reached to
I
DEFROST
or above,
I
DEROST
differs in different
models.
9.9.4 Defrosting Actions:
9.10 Automatic operation mode
Defrost 10or 6minutes
45S 25S
Compressor
4-way Valve 23S
40S
Outdoor Fan
Indoor Fan
10S
9.10.1 The air conditioner automatically selects one of the following operation modes: cooling, heating
or fan only according to the temp. difference between room temp. (TA) and set temp. (TS).
TA—TS Operation mode
TA—TS>2 Cooling
-1 ≤ TA-TS ≤ +2 Fan-only
TA-TS<-1 Heating (air-only for cooling only type)
9.10.2 The indoor fan blows automatically in corresponding selected mode.
9.10.3 The motion of indoor fan’s blade should accord with the selected operation mode.
9.10.4 One mode should be carried out for at least 15 minutes once selected. If the compressor
cannot start for 15 minutes, reselect the operation mode according to the room temp. and set
temp., or reselect when the set temp. varies.
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