Troubleshooting Guide - York EVHC 09 DSAAAR Service Manual

Troubleshooting Guide

Troubleshooting Guide
Note: When replacing the controller, make sure insert the wire jumper into the new controller, otherwise the
unit display C5
Trip of breaker or blow
of fuse
The air conditioner
does not react after
it is powered ( after
the plug is inserted,
the buzzer does
not sound and the
remote startup has
no response)
The remote controller
does not receive
signals (after it is
powered, the buzzer
will sound, unless it
has malfunction)
The breaker trips at once when it
is set to "ON".
The breaker trips in few minutes
when it is set to "ON"
No power
Power plug is not well plugged in and poor con-
nection
Fuse of controller burnt out
The transformer connection is loose or has bad
contact or the transformer has malfunction
C o n t ro l l e r i s b rok e n
Remote controller is short of power
R e m o t e c o n t r o l l e r m a l f u n c t i o n
Receiver loose or poor connection
Receiver is broken
Power voltage is too low
Measure insulation resistance to ground to see
if there is any leakage.
The circuit or the part of the air conditioner has
malfunction. They heat and break the insulation
and lead to short circuit or creepage. Measure
the insulation resistance or eliminate the malfunc-
t i o n o n e b y o n e . I f t h e b r e a k e r i t s e l f h a s
malfunction, then replace the breaker.
Check power supply circuit.
Check if the plug is properly plugged in and
make the loose contact firm.
Change controller fuse
Fasten the wiring; measure the output
v o l t a g e o f t h e t r a n s f o r m e r , i f i t i s
incorrect, change the transformer
Check remote controller
C h a n g e b a t t e r i e s
First, press the manual switch button AUTO,
if there is no response,check based on the
above methods. If it runs normally after
pressing the button,check again whether the
installation position and the connection wire
of the reception head is correct. If it is
correct,then replace the receiver or the re-
mote controller.
heck the voltage. If it is lower than 10£¥ of the rated voltage, check the
cause, improve the power supply condition and add the stabilized voltage
power supply.
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