Test Run; The Following Phenomena Do Not Represent Faults; Information On Rating Plate - Mitsubishi Electric CITY MULTI Series Installation Manual

12. Test run

12.1. The following phenomena do not represent faults.

Phenomenon
Indoor unit does not perform cooling
(heating) operation.
The auto vane rotates and begins to blow air
horizontally.
Fan setting changes during heating.
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
minutes when turning ON universal power
supply.
Drain pump continues to operate even after
the unit has been turned off.
Indoor unit emits noise when switching from
heating to cooling and vice versa.
Immediately after startup, the indoor unit
emits the sound of the refrigerant flow.
Warm air comes from an indoor unit that is
not performing a heating operation.

13. Information on rating plate

PQHY-P·YLM-A1, PQHY-P·YLM-A2
Individual unit P200YLM
Module set -
Refrigerant (R410A)
Allowable
pressure (Ps)
Net weight
Individual unit P400YSLM
Module set P200 + P200
Refrigerant (R410A)
Allowable
pressure (Ps)
Net weight
PQRY-P·YLM-A1, PQRY-P·YLM-A2
Individual unit P200YLM
Module set -
Refrigerant (R410A)
Allowable
pressure (Ps)
Net weight
Individual unit P400YSLM
Module set P200 + P200
Refrigerant (R410A)
Allowable
pressure (Ps)
Net weight
36
Display of remote controller
"Cooling (heating)" flashes
Normal display
Normal display
No lighting
Heat ready
"HO" or "PLEASE WAIT"
flashes
No display
Normal display
Normal display
Normal display
P250YLM P300YLM P350YLM
- - -
5.0 kg
HP: 4.15 MPa, LP: 2.21 MPa
170 kg
P450YSLM P500YSLM P550YSLM
P250 + P200 P250 + P250 P300 + P250
5.0 kg + 5.0 kg
170 kg + 170 kg
P250YLM P300YLM P350YLM
- - -
5.0 kg
HP: 4.15 MPa, LP: 2.21 MPa
173 kg
P450YSLM P500YSLM P550YSLM-A
P250 + P200 P250 + P250 P300 + P250
5.0 kg + 5.0 kg
173 kg + 173 kg
When another indoor unit is performing the heating (cooling) operation, the
cooling (heating) operation is not performed.
If air has been blowing downward for 1 hour during cooling, the unit may
automatically change to horizontal blowing with the control operation of the
auto vane. During defrosting or immediately after heating start-up/shut-down,
the auto vane automatically rotates to blow air horizontally for a short period
of time.
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 set 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).
The system is being started up.
Operate remote controller again after "HO" or "PLEASE WAIT" disappears.
After turning off the cooling operation, unit continues to operate the drain
pump for 3 minutes, then shuts it off.
Unit also continues to operate drain pump if condensate has been generated.
This is a switching sound of the refrigerant circuit and does not imply a
problem.
Unstable flow of the refrigerant emits a sound. This is temporary and does not
imply a problem.
The LEV is slightly open to prevent refrigerant, of the indoor unit that is not
performing the heating operation, from being liquefied. This does not imply a
problem.
P400YLM P450YLM P500YLM
- - -
6.0 kg
214 kg
P600YSLM P700YSLM P750YSLM
P300 + P300 P350 + P350 P400 + P350
HP: 4.15 MPa, LP: 2.21 MPa
P400YLM P450YLM P500YLM
-
6.0 kg
217 kg
P600YSLM-A P700YSLM-A P750YSLM-A
P300 + P300 P350 + P350 P400 + P350
HP: 4.15 MPa, LP: 2.21 MPa
Cause
P550YLM P600YLM
- -
11.7 kg
243 kg
P800YSLM P850YSLM
P400 + P400 P450 + P400
6.0 kg + 6.0 kg
214 kg + 214 kg
P550YLM P600YLM
- - -
11.7 kg
247 kg
P800YSLM-A P850YSLM
P400 + P400 P450 + P400
6.0 kg + 6.0 kg
217 kg + 217 kg
P900YSLM
P450 + P450
P900YSLM
P450 + P450