Mitsubishi Electric CITY MULTI CMB-WP1016V-GA1, Service Handbook

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VI
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HWE1410A GB
(2) Outdoor unit (cooling only, heating only, cooling main and heating main modes)
(Heat source unit)
Start
Breaker
turned on
Operation
command
Error stop
Error display on
the outdoor unit LED
Self-holding of
protection function
Operation command
to the HBC controller
Operation
mode
Error mode
52C1 ON
*Note 1
*Note 2
*Note 3
*Note 4
YES
YES
YES
YES
NO
NO
NO
fan
NO
"HO" / "PLEASE WAIT" blinks
on the remote controller
Operation command to the HBC controller
Cooling only, Heating only
Mixture of units in cooling and heating
Mixture of units in cooling and heating
Protection function
self-holding cancelled.
Normal operation
1. 52C1 4-way valve OFF
2. Inverter output 0Hz
3. Fan stop (PURY)
4. All solenoid valves OFF
Cooling Only Heating Only
2
2
Cooling Main
Operation
mode
Operation
mode
*Note 1. For approximately three minutes after power on, a search for the outdoor unit address, HBC controller
address, indoor unit address, and remote controller address, and group information is performed.
While this process is performed, "HO" and "PLEASE WAIT" blink on the display. If the indoor units have
not been grouped with the remote controller, "HO" and "PLEASE WAIT" will keep blinking on the display,
even after three minutes after power on.
*Note 3. The units will follow the operation mode commands from the HBC controller
*Note 4. When the operation mode commands from the HBC controllers are mixed (both cooling and heating), the
actual operation mode is determined by the outdoor unit.
*Note 2. The system may go into the error mode on the indoor unit, HBC controller, or the outdoor unit side.
The outdoor units will stop only when all the indoor units are experiencing a problem. If at least one of the
indoor units is in normal operation, the outdoor unit will continue in operation, displaying an error code on
the LED.
Heating Main
Indoor units
registered to the
remote controller
Error
Unit in the stopped state
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