Heat Controller Energy Knight B/A-HMC30AS Service Manual page 18

6. Heating Operation - 1st Stage
1) Operation Condition : This stage means the 1st elapsed time which the room temperature reaches around at the desired
temperature after starting the heating operation.
- 60% & 40% compressor operations would be operated until the room temperature reaches at [Desired Temp. +0.5°C].
In other words, 100% operation would be performed.
- 60% & 40% compressor operations would be all suspended when the room temperature goes to [Desired Temp. +0.5°C].
2) Condition to decide load
: This stage performs the 100% compressor On/Off 2 times.
- 100% compressor operation would be performed when 3-minutes pass after suspension of the previous stage and
the room temperature reaches at [ Desired Temp. -0.5°C].
- 60% & 40% compressor operations would be suspended when the room temperature goes to [Desired Temp. +0.5°C].
- Criteria to decide following operation stage
a. when the average time during 2 times compressor operations is more than 360 seconds,
b. when the temperature falls more than – 3°C within 3 minutes after OFF of compressor,
c. when the outdoor temperature is under 7°C.
- It operates the heating operation -2nd stage if any condition among the above criteria would be satisfied.
Room Temp.
Desired Temp. +1.0 C
Desired Temp. +0.5
Desired Temp.
Desired Temp. -0.5
40%
Comp
60%
Outdoor Fan
Indoor Fan
more than 3 mins.
ON OFF
ON OFF
MAX. OFF
Controlled at the Indoor Unit
- 18 -
more than
tm1 tm2
3 mins.
ON OFF ON
ON OFF ON
MAX OFF MAX.
.