Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 198

SCM-HG (2 room)
(d) Hot keep operation
If the hot keep operation is selected during the heating operation, the indoor fan is controlled based on the temperature of the
indoor unit heat exchanger (detected with Th
¡
Normal mode (Normal heating operation, operation after HI POWER completion)
Indoor fan
3rd speed
2nd speed
1st speed
Note (1) Refer to the table shown above right for the values A and B.
¡
Hot keep M mode [During HI POWER operation (for 15 min.)]
Indoor fan
1st speed
(e) Defrosting
(i) When the following conditions are met, the defrosting operation will start.
1) During normal operation
a) When 40 minutes has passed since the start of heating or 40 minutes after the last defrosting (based on
cumulative operation time of compressor).
b) When the outdoor heat exchanger thermistor (Tho-R) temperature is –2 °C or less for 3 continuous minutes
after 37 minutes have passed.
c) Outdoor temperature thermistor (Tho-A) – outdoor heat exchanger thermistor (Tho-R) temperature
outdoor temperature thermistor (Tho-A) temperature + A °C or more.
A = Outdoor temperature
d) When the compressor is operating.
u Or, during heating, defrosting will start when the decision speed counts zero (0) rps for 10 times or more
and all conditions in a), b) and d) have been satisfied.
2) `During defrosting acceleration
a) When 40 minutes has passed since the last defrosting (based on cumulative operation time of compressor).
b) When the compressor is operating.
u Or, during heating, defrosting will start when the decision speed counts zero (0) rps for 10 times or more
and all conditions in a) and b) have been satisfied.
Note (1) Defrosting acceleration is when the finishing of the previous defrosting is according to the defrosting conditions of the 10 minutes
196
-R, indoor unit heat exchanger thermistor) to prevent blowing of cool wind.
I
6th speed
5th speed
4th speed
Indoor heat exchanger temp. (˚C)
4th speed
3rd speed
2nd speed
Indoor heat exchanger temp. (˚C)
– 2 °C: 4, outdoor temperature < – 2 °C: 6.
that have passed.
7th speed
¡ Values of a, b
At 0 rps command
Other than 0 rps
command
7th speed
6th speed
5th speed
A B
22 25
17 19
0.44 ×