Heat Controller Energy Knight B/A-HMC30AS Service Manual page 17

5. Cooling Operation - 3rd Stage
1) This operation works when the indoor load is small. The single operation of 40% compressor is performed as follows.
- The single operation of 40% compressor works when the Room Temp. reaches at [Desired Temp. + 0.5 °C].
- 40% compressor operation stops when the Room Temp. reaches at [Desired Temp. - 0.5 °C].
(But, the compressor can restart after 3 mins of compressor's off.)
2) Condition to shift operation stage
- It operates the Cooling Operation -2nd Stage when the desired temp. goes to "Desired Temp +1.0°C" more than 3 mins.
during its operation.
- It shifts to 100-40% operation after standby until 40% operation goes OFF, if the single operation of 40% compressor works
more than 1 hour.
3) Operation Diagram
Room Temp.
Desired Temp.+0.5
Desired Temp.
Desired Temp.-0.5
OFF OFF
60 %
Comp
OFF ON
40 %
Outdoor Fan OFF MIN.
Indoor Fan
Room Temp.
3 mins. 3 mins.
OFF OFF OFF
OFF ON OFF
OFF MIN. OFF
Controlled at the Indoor Unit
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