Test Run; The Following Phenomena Do Not Represent Trouble (Emergency); Information On Rating Plate - Mitsubishi Electric City Multi PQRY-P400YGM-A Installationshandbuch

11. Test run

11.1. The following phenomena do not represent trouble (emergency)

Phenomenon
Indoor unit and BC controller generate sound
at the cooling/heating change over sometime.
Indoor unit does not perform cooling (heat-
ing) operation.
The auto vane runs freely.
Fan setting changes during heating.
Fan stops during heating operation.
Fan does not stop while operation has been
stopped.
No setting of fan while start SW has been
turned on.
Indoor unit remote controller shows "HO" or
"PLEASE WAIT" indicator for about five min-
utes when turning ON universal power sup-
ply.
Drain pump does not stop while unit has been
stopped.
Drain pump continues to operate while unit
has been stopped.

12. Information on rating plate

Model
Refrigerant (R410A)
Allowable pressure (Ps)
Net weight
MANUFACTURER: MITSUBISHI ELECTRIC CORPORATION AIR-CONDITIONING & REFRIGERATION SYSTEMS
WORKS 5-66, TEBIRA, 6-CHOME, WAKAYAMA CITY, JAPAN
18
Display of remote controller
Normal display
"Cooling (heating)" flashes
Normal display
Normal display
Defrost display
No lighting
Heat ready
"HO" or "PLEASE WAIT" flashes
Light out
PQRY-P400YGM-A
kg –
kg 232
This is not a trouble as it is just a selecting sound.
When multiple indoor units (max. 3) are connected to the same branch of the BC
controller, the heating (cooling) operation cannot be performed while another
indoor unit is performing a cooling (heating) operation.
Because of the control operation of auto vane, it may change over to horizontal
blow automatically from the downward blow in cooling in case the downward
blow operation has been continued for 1 hour. At defrosting in heating, hot adjust-
ing and thermostat OFF, it automatically changes over to horizontal blow.
Ultra-low speed operation is commenced at thermostat OFF.
Light air automatically changes over to set value by time or piping temperature at
thermostat ON.
The fan is to stop during defrosting.
Fan is to run for 1 minute after stopping to exhaust residual heat (only in heating).
Ultra low-speed operation for 5 minutes after SW ON or until piping temperature
becomes 35°C, low speed operation for 2 minutes thereafter, and then set notch
is commenced. (Hot adjust control)
System is being driven.
Operate remote controller again after "HO" or "PLEASE WAIT" disappear.
After a stop of cooling operation, unit continues to operate drain pump for three
minutes and then stops it.
Unit continues to operate drain pump if drainage is generated, even during a
stop.
PQRY-P500YGM-A
–
HP: 4.15 MPa, LP: 2.21 MPa
236
Cause
PQY-P01YGM-A
12.0
208