Specifications

142
(f) Defrosting
(i) When the following conditions are met, the defrosting operation will start.
1) During normal operation
a) When 30 minutes has passed since the start of heating or 30 minutes after the last defrosting (Cumulative actual
operating time of compressor other than the outdoor unit frequency 0 Hz).
b) When the outdoor heat exchanger thermistor temperature is –2 °C or less for 3 continuous minutes after 27 minutes
have passed.
c) Outdoor thermistor temperature (Th6) – Outdoor gas piping thermistor temperature
≤
0.44 × Outdoor thermistor
temperature + A °C or more. Avalue : Th6
≤
–2°C · 4, Th6 < –2°C · 6
d) When the compressor is operating.
u In addition, defrosting operation will start when the count of the decision frequency has become 0 Hz reaches 10
times or more and when all the conditions presented above in a), b) and d) are met.
2) During defrosting acceleration
a) When 30 minutes has passed since the last defrosting (Cumulative actual operating time of compressor other than
the outdoor unit frequency 0 Hz).
b) When the compressor is operating.
u In addition, defrosting operation will start when the count of the decision frequency has become 0 Hz reaches 10
times or more and when all the conditions presented above in a) and b) are met.
Note (1) Defrosting acceleration is when the finishing of the previous defrosting is according to the defrosting conditions of the 10 minutes that have
passed.
¡Hot keep M mode [During HI POWER operation (for 15 min.)]
¡ Values of a, b
ab
At 0 Hz command 22 25
Other than 0 Hz
17 19
command
¡ Values of a, b
ab
At 0 Hz command 30 33
Other than 0 Hz
17 30
command
Note (1) Refer to the table shown above right for the values a and b.
Indoor heat exchanger temp. (˚C)
1st speed
Indoor blower
Indoor heat exchanger temp. (˚C)
2nd speed
3rd speed
4th speed
5th speed
6th speed
7th speed
8th speed
OFF
a b 29 31 32 34 38 42 50
Indoor blower
OFF
ULo
Lo
Me
Hi
a b 38 41 44
Note (1) Refer to the table shown above right for the values a and b.
◆SRRM40 model
¡Normal mode