Fault Checkup - Haier MRV Serie Instrucciones De Instalación

FAULT CHECK
Installation Requirements Checklist
Please check the following before contacting a repair service:
Symptoms
Running water noise sound
Tapping sound
Bad smell in outlet air
Operating indicator flashing
Waiting Indicator
Idle indoor unit still has sound of refrigerant
flowing and radiating
temperatures.
Clicking sound when unit comes on.
Start or stop working automatically
Failure to work
Poor cooling & heating effects
Under the following circumstances, immediately stop the operation, disconnect the manual supply switch and contact
the after-service personnel.
• When control buttons are inoperable
• When circuit breakers trip repeatedly
• When the outdoor unit is blocked with ice or foreign objects.
• When the system fails to restart after power reset.
• When system operates abnormally.
31-5000500 Rev. 0
Running water sound can be heard during starting operation, during operation
or immediately after stopping operation. When it starts for 2-3 minutes, the
sound may become louder, which is the flowing sound of refrigerant or the
draining sound of condensate water.
During operation, the air conditioner may make a tapping sound, which is
caused from the temperature changes of the heat exchanger.
Clean filters and confirm the condensate drain pan and line are clean and
clear.
When switching it on again after power failure, turning on the manual power
switch will show the operating indicator flashes.
Displayed when the control is set it to the cooing or heating mode and the
current mode of operation is opposite to the requested setting.
Some refrigerant flow is allowed to pass through idle indoor units to prevent oil
and refrigerant from blocking the metering valve. This flow may result in some
radiating temperature and noise.
The sound is made due to the expansion valve resetting when the unit is
powered on.
Check if it is set to Timer-ON and Timer-OFF.
Check if there is a power failure.
Check if the supply fuse and breaker are disconnected.
Check if the unit is displaying any faults.
Check if wait symbol is displayed. This is due to other indoor units connected
to the same outdoor unit are running in the opposite mode.
System cannot heat and cool simultaneously.
Be sure outdoor unit fan inlet and outlets are not blocked.
Check to be sure doors and windows are closed.
Check for dirty or blocked air filter.
Make sure the fan speed is not too low.
Check if the mode set to Fan mode.
Be sure the temperature control is set only correctly.
Reasons
9