Fintek iCOOL, Technical Manual

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9.3.4 Heating mode
1. Setting temperature range ˖ 18 ć -30 ćDŽ
2. Compressor working conditions
˖
a Compressor starts condition: RT ” ST+1
ć
a. Compressor starts condition: RT ” ST+1
ć
.
b. Compressor stops condition: RT ˚ ST+3 ć˗
c. +1
ć˘
ST-RT ” +3
ćˈ
compressor keeps original working state
DŽ
(RT: room temperature, ST: setting temperature)
3. First time of starting on the machine, unit would not check room temperature, and compressor starts
directly. Only after 3 minutes, unit would check room temperature, compressor would work according
with the room temperature.
But unit would check indoor coil temperature as following:
a. If coil temp • 38 e , indoor fan works.
b. If coil temp
˘
38
e
, indoor fan does not work, with "1 minute Anti-cold protection". 1 minute later, indoor
fan would work as setting speed.
c. If coil temp • 55
e
, compressor and indoor fan work, outdoor fan stops working,.
d. If coil temp • 64 e , compressor and outdoor fan do no work, only indoor fan works.
4. Four-way valve working condition
˖
In heating mode, four-way valve keeps opening (including turning off
when unit reaches setting temperature, but except defrost course). When unit is turned into heating
mode or turned on, four-way valve will open 5 seconds earlier than compressor. When heating mode
is changed or unit is turned off, four-way valve will close 2 minutes later than compressor.
5. Outdoor fan motor working conditions: start or close same time as the compressor. (When unit goes into
defrost or over heating protection, it will work according to defrost or over heating protection solution).
6. Indoor fan speed control:
a Indoor fan will work as Auto speed low speed middle speed or high speed
a. Indoor fan will work as Auto speed, low speed, middle speed or high speed.
b. For Auto speed, it will work as following chart:
) )DQVSHHG
KLJK
PLGGOH
ORZ
7. Anti-cold air function: After unit going into heating mode, it would check indoor coil temperature. When
IPT • 38
ć
, indoor fan motor will run as setting speed. When IPT
˘
38
ć
,indoor fan would not run, After
compressor running for 60 seconds, indoor fan would run again. With anti-cold air function, the yellow
ORZ
-5
ć
-2
ć
-1
ć
1
ć
RT-RS
timer led will flash with 0.5Hz frequency. (IPT is indoor coil temperature) .
8. Blowing residual heat function: In heating mode, when room temperature rises up to setting temperature,
compressor will stop first, and indoor fan will work with low speed for 60 seconds, then stop.