HOMCOM 821-036V70 Manual page 11

TROUBLESHOOTING
If a condition listed below occurs, please check the following items before calling
customer service.
Problem
The unit doesn't operate
The dehumidifying
function doesn't work
No air is discharged
Operation is noisy
1.Checks to the area
Prior to beginning work on systems containing flammable refrigerants, safety
checks are necessary to ensure that the risk of ignition is minimized. For repair to
the refrigerating system, the following precautions shall be complied with prior to
conducting work on the system.
Work procedure
Work shall be undertaken under a controlled procedure so as to minimize the risk of
a flammable gas or vapour being present while the work is being performed.
2.General work area
All maintenance staff and others working in the local area shall be instructed on the
nature of work being carried out. Work in confined spaces shall be avoided. The
area around the workspace shall be sectioned off. Ensure that the conditions within
the area have been made safe by control of flammable material.
3.Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and
during work, to ensure the technician is aware of potentially flammable
atmospheres. Ensure that the leak detection equipment being used is suitable for
use with flammable refrigerant, i.e.nonsparking , adequately sealed or intrinsically
safe.
4.Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or any associated
parts, appropriate fire extinguishing equipment shall be available to hand. Have a
dry powder or CO2 fire extinguisher adjacent to the charging area.
Possible Cause
Has the power cord been disconnected? Plug the power cord into the outlet.
Is the tank full indication lamp blinking?
(The tank is full or in a wrong position.)
Is the temperature of the room above 35
℃ or below 5℃?
Is the air filter clogged?
Is the intake duct or discharge duct
obstructed?
Is the air filter clogged?
Is the unit tilted or unsteady?
Is the air filter clogged?
NOTE FOR MAINTENANCE WORK
Empty the water in the drainage
tank and then reposition the tank.
The protection device is activated
and the unit cannot be started.
Clean the air filter as instructed
under "Cleaning the dehumidifier".
Remove the obstruction from the
discharge duct or intake duct.
Clean the air filter as instructed
under "Cleaning the dehumidifier".
Move the unit to a stable, sturdy
location.
Clean the air filter as instructed
under "Cleaning the dehumidifier".
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Solution