Midea RSJ-100/N1-540V-D User Manual

MCAC-RTSM-2013-12 Midea High-temperature Direct-heating Heat Pump Water Heater Technical Manual
47
9. Troubleshoot of abnormal phenomena
Not distribute to
malfunction
Phenomena
Cause
 White aerosol or
globule is give out.
 Make sound of “hiss”
every now and then.
 Air supply motor stop automatically to defrost.
 At the beginning and the end of the defrost process, sound is give out in
motor valve occur.
 During the process or just after have stopped, sound like water flow occur,
which will be amplified at the first 2~3 minutes, this is caused by process
of refrigerant current or water discharge at dehumidifying operation.
 Slight ”hiss” is caused by heat exchanger as temperature changes. The
sound give out because of heat expands and cold contracts of heat
exchanger.
 During the beginning or just after have stopped, sound like clock occur,
which is caused by electric expanding valve operation.
Please check
that again
Stop operation or drive up
automatically
 Detect the timer whether be given wrong operation.
 Detect anti-freezing mode is opened.
No operate
 Whether the power is cut.
 Whether the manual power supply switch is off.
 Whether fuse is broken.
 Whether the protection device works.(Operation lamp is lightened.)
 Whether it is the time set.(Operation lamp is lightened.)
Inefficient heating
 Whether the inlet and outlet of boiler units is blocked.

Midea RSJ-100/N1-540V-D Specifications

General

Brand	Midea
Model	RSJ-100/N1-540V-D
Category	Water Heater
Language	English