Troubleshooting _ 25
Symptom
Check Code
Countermeasure
T
roubleshooting Procedure
Measurement Picture
Switch Code
(Panel-Sub PBA)
►
Eco Warm
LED Flash
The Power button is
continually pressed.
A
button other than the
Power button is continually
pressed.
•
•
Check whether either the Power switch or a
tact switch is continually pressed.
Check whether the service PB
A
holding
screws are fastened too tight. If they are
fastened too tight, loosen them a little.
•
If the main PBA
switching IC on/off Code has
occurred, replace the main PBA.
•
The “Eco Warm LED ” f
ashes if the main
relay
connections are incorrect. Check the
connections. If there is no f
ashing in the
connections, replace the main PBA.
•
Check beep sound, when pressing button - sound on : Panel fault -> Check connections, still same, change a panel - no sound : Main PBA fault -> Check connections, still same, change a Main PBA
Check the contact between the
control panel buttons and their
corresponding tact switch.
-
There must be a gap between a
control panel button and its
corresponding micro switch.
Otherwise, an Code occurs
after approx. 30 seconds has
passed.
