Dry Operation - Mitsubishi Electric CMB-WP1016V-GA1 Service Handbook

[ VI Control ]

(3) Dry operation

1. Indoor unit fan stop
2. Inverter output 0Hz
3. HBC controller VB3 fully closed.
4. Solenoid valve OFF
5. Outdoor unit fan stop (PURY)
6. HBC controller Solenoid valve OFF
7. HBC controller
*Note 1.When the return air temperature reaches 18ºC [64ºF] or above, the outdoor unit (compressor) and the
indoor unit fan will start a simultaneous intermittent operation. The operations of the outdoor unit,
HBC controller, outdoor unit LEVs and solenoid valves that are performed when the compressor turns on
are the same with the cooling operation.
*Note 2.Thermostat is always kept on during test run mode, and indoor and outdoor unit intermittent operation
(ON) time is a little longer than that of normal operation.
HWE1410A
Dry operation
4-way valve OFF
Test run mode
NO
Suction temperature
1. Outdoor unit (compressor)
intermittent operation
2. Indoor unit fan intermittent operations
(Synchronized with the compressor:
low speed, OFF operations)
LEV fully closed
YES
ON *Note 2
NO
Thermostat ON
18 C[64 F]
YES
*Note 1
2 3
- 84 -
Normal operation
Thermostat ON
Unit in the stopped state
GB