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11. Test run
11.1. The following phenomena do not represent faults.
Display of remote controller
Normal display
Defrost display
No lighting
Heat ready
“H0” or “PLEASE WAIT” flashes
Normal display
Normal display
Normal display
Cause
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.
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 “H0” or “PLEASE WAIT” disappear.
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.
Phenomenon
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 “H0” or
“PLEASE WAIT” indicator for about five min-
utes when turning ON universal power sup-
ply.
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.
Summary of Contents for PUHZ-RP250YHM-A
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