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iN401 - iN501 Wiring Diagrams and Troubleshooting
58
May
2019
-
Revision
00
Description
Possible
Cause
Remedy
Software
• Incorrect settings.
• Incompatible settings.
• Incorrect software version.
• Faulty wiring.
• Review and correct settings.
• Review and correct settings.
• Update software version.
• Check for nicked or broken sensor wiring or connectors. Also
check for corroded or wet connectors.
Manifold Sensors
• Unplugged connectors.
• Faulty sensor wiring.
• Faulty sensor.
• Flue temperature sensor.
• Inlet water temperature sensor.
• Faulty controller.
• Check connectors and ensure they are securely connected
• Check for nicked or broken sensor wiring or connectors. Also
check for corroded or wet connectors
• Measure resistance of sensor at connector (18 kΩ at 50°F,
10 kΩ at 77°F, 3 kΩ at 140°F)
• Replace controller.
System Alert / Fault
• A system alert or fault is present
(main menu screen).
• Malfunction of monitored part or
system.
• Press the Menu bar and refer to the remedy for indicated
part or system.