Mitsubishi Electric MUH-A07YV-E1 Service Manual page 21

Operation time chart
Example
Defrost thermistor RT61
10.1: or more
-3: or less
Outdoor 52C
contactor
(Compressor)
ON
OFF
X62
(R.V. coil)
ON
OFF
ON
SR61
Outdoor fan
OFF
ON
Defrost
counter
OFF
ON
Indoor fan
Very Low
OFF
Indoor
Horizontal
Horizontal vane
Set position
NOTE When the indoor coil thermistor RT12 reads above 0°C, indoor fan operates at Very Low for 30 seconds.
When the indoor coil thermistor RT12 reads 0°C or less, the indoor fan stops.
3. R.V. coil control
Heating · · · · · ON
Cooling · · · · · OFF
Dry · · · · · · · · OFF
When operation starts, the 4-way valve reverses for 5 seconds right before start-up of the compressor.
Operation time chart
Compressor
R.V. coil
Outdoor fan
9-2. "I FEEL CONTROL" (
9-2-1. HEAT mode of "I FEEL CONTROL"
1. High pressure protection
High pressure protection is as same as HEAT OPERATION.(9-1.1.)
2. Defrosting
Defrosting is as same as HEAT OPERATION.(9-1.2.)
3. R.V. coil control
R.V. coil control is as same as HEAT OPERATION.(9-1.3.)
15 sec.
30 sec.
Max 10 min.
NOTE
(COOL/DRY)
5 sec.
ON
OFF
ON
OFF
ON
OFF
) OPERATION
30 sec.
(HEAT)
5 sec.
21
5 sec.
ON
OFF
ON
OFF
ON
OFF