20
|
Service Manual
Singular Combi Boiler - BTC 439002301 A (12.2021)
A2 Error - Wire Check
1. Check the connection of the Fan Connector Wire (Red-Black).
2. Check the connection of the Hall IC Connector Wire (Yellow-White).
Figure 6
Fan
Connector
Wire
Hall IC
Connector
Wire
3. Check the connection of the control board Connector Wire (Red-Black).
Figure 7
Control
Board
Connector
A2 Error - Control board Input Voltage Check
1. Measure the control board input voltage (measure while using the hot water)
Multi tester range: “DC V”
Measurement Method Measured value
Measure the applied voltage
Red - Black: DC 5 – 45 V
Y
ellow – Black: DC 10 – 13 V
Measure FAN Hz White – Yellow: 0 – 270 Hz
Table 24
Figure 8
V
Applied Voltage Measurement Method
Figure 9
Hz
FAN Hz Measurement Method
2. If the voltage is measured normally but the fan does not operate, replace the
fan.
3. If the fan operates but Hz cannot be measured, replace the fan.
4. If the voltage cannot be measured, replace the control board.
To Next Page
Loading...
Need help?
General