The Following Symptoms Are Normal - Mitsubishi Electric PFAV-P250VM-E Service Manual

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[ IX Test Run Mode ]

[6] The following symptoms are normal.

Symptoms
The fan stops during heating
operation.
The fan keeps running after
the unit has stopped.
The fan speed does not reach
the set speed when operation
switch is turned on.
When the main power is
turned on, the display shown
on the right appears on the in-
door unit remote controller for
5 minutes.
Indoor unit makes noise dur-
ing cooling/heating change-
over.
Sound of the refrigerant flow is
heard from the indoor unit im-
mediately after starting opera-
tion.
HWE10190
Remote controller
display
The fan remains stopped during defrost operation.
Defrost
When the auxiliary heater is turned on, the fan operates for one minute
Unlit
after stopping to dissipate heat.
The fan operates at extra low speed for 5 minutes after it is turned on or
until the pipe temperature reaches 35°C[95°F], then it operates at low
STAND BY
speed for 2 minutes, and finally it operates at the set speed.
(Pre-heating stand-by)
The system is starting up. Wait until the blinking display of "PLEASE
"PLEASE WAIT"
WAIT" goes off.
icon blinks on the
display.
This noise is made when the refrigerant circuit is reversed and is normal.
Normal display
This is caused by the transient instability of the refrigerant flow and is nor-
mal.
Normal display
- 116 -
Cause
GB
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