Install Instructions

63
TROUBLESHOOTING
Table 10.3: Control Board Warning Error Codes
“W”
CODE
Error Display
Error
Description
Corrective Action
#W00
Blinking Screen – Press “Reset” key to view this message
Outdoor Sensor
Open
1) Check to see if the Outdoor Sensor is
connected.
2) Check wiring connectons to outdoor sensor.
3) Remove wires from terminals #3 and #4 on
the boiler and check the resistance between
them. If the reading shows an open circuit
there is an open circuit.
#W01
Blinking Screen – Press “Reset” key to view this message
Outdoor Sensor
Shorted
1) Check wiring connection to Outdoor Sensor.
2) Remove the wires from terminals #3 and
#4 on the boiler and check the resistance
between them.
• If this reading is below 3000 Ω check the
reading at the sensor.
• If the reading is the same at the sensor,
replace the sensor.
• If the reading is higher at the sensor, replace
the wiring.
#W02
Blinking Screen – Press “Reset” key to view this message
DHW Sensor
Open
1) Be sure the optional DHW Sensor (54157)
is connected.
2) Remove the wires from terminals #5 and
#6 on the boiler and check the resistance
between them.
a. If the resistance is above 10 k Ω, check the
resistance at the sensor.
b. If the reading at the sensor is the same,
replace the sensor.
c. If the reading at the sensor is lower, replace
the wiring.
#W03
Blinking Screen – Press “Reset” key to view this message
DHW Sensor
Shorted
1) Check wiring connection to DHW Sensor.
2) Remove the wires from terminals #5 and
#6 on the boiler and check the resistance
between them.
a. If this reading is below 1000 Ω, check the
reading at the sensor
b. If the reading is the same at the sensor,
replace the sensor.
c. If the reading is higher at the sensor, replace
the wiring.
#W04
Flue Sensor
Open
1) Check wiring connection to flue sensor.
2) Compare sensor resistance to Figure 8.3.
If resistance value is incorrect, replace sensor.