- 24 -
- 25 -
Displays on each remote controller in communication failure.
Case
Kitchen
Bath
Ensuite
Kitchen failure
740
760
760
Bath failure
760
750
760
Ensuite failure
760
760
750
PCB failure
740
750
750
ERROR
CODE
ON
REMOTE
CONTROL
CONDITION
OF
LED IN PCB
NUMBER
OF
FLASHING
PHENOMENON
SYMPTOM
CAUSE
CHECK METHOD
CORRECT
VALUE
Refer
Figure
700
731
FLASHING
22
PCB FAILURE
LED FLASHES
IMMEDIATELY
PCB DEFECT
EXCHANGE PCB.
-
LIGHTING
UP
-
HOT WATER TEMPERATURE CAN NOT
BE REACHED PRESET TEMPERA-
TURE
PRESSURE OF GAS SUPPLY
CHECK GAS INLET PRESSURE(SUFFICIENT GAS
INLET PRESSURE AT MAX. COMBUSTION).
Table 2
WATER INLET FILTER CLOG UP.
VISUAL CHECK AND CLEAN IT.
GAS CONTROL VALVE
CHECK MANIFOLD PRESSURE.
Table 2
TEMPERATURE SENSOR
DEFECT (OUTGOING/INCOMING)
CHECK THE RESISTANCE IN TRANSMISSON
CONNECTOR FOR SENSOR SIDE.
Table 3
Fig.8
REMOTE CONTROLLER DEFECT OPERATE WATER HEATER WITHOUT REMOTE CON-
TROLLER AND CHECK HOT WATER 48°C/60°C/70°C
* ABOVE CHECK METHOD IS JUST ONLY FOR CHECKING PURPOSE. DO NOT USE JUST AS ABOVE CHECKING METHOD INTACT IS IN NORMAL OPERATION.