Intellihot iN401, Руководство по эксплуатации и установке

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55 iN401 - iN501 Wiring Diagrams and Troubleshooting
May 2019 - Revision 00
15.3 Troubleshooting Guide
Description Possible Cause Remedy
Blower
Speed Fault • Blower noisy / impeller jammed.
• Disconnected signal wire.
• Wiring faulty.
• Inspect blower / impeller. Clean and remove any
obstructions.
• Check PW M signal. Check for loose wires / pins, and repair.
• If the problem persists, turn control panel OFF, shut gas
valve, disconnect power from unit, and contact an authorized
service technician.
Igniter
Ignition Failure • Water over-heat switch tripped.
• Faulty DSI, faulty igniter wire,
faulty ignition connection, faulty
PCB, bad igniter.
• Low gas pressure.
• Wiring faulty.
• Check pump, check cross-over solenoid. Electrical noise
(DSI).
• Replace part.
• Adjust gas pressure at regulator, check / increase size of gas
line, check for gas line blockage.
• If the problem persists, turn control panel OFF, shut gas
valve, disconnect power from unit, and contact an authorized
service technician.
Open Sensors
Inlet / Outlet Sensors • Unplugged connectors.
• Faulty sensor wiring.
• Faulty sensor.
• Heat engine water outlet
temperature 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.
Faulty Sensors
Inlet / Outlet Sensors • Faulty sensor wiring or
faulty sensor.
• Inlet water temperature sensor.
• Heat exchanger water outlet
temperature sensor.
• Faulty controller.
• 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
Heat Exchanger
Outlet temperature exceeded set
limit • Flow rate changes excessive.
• Faulty sensor wiring.
• Faulty sensor.
• Faulty controller.
• Ensure the water flow rate does not change faster than 2
GPM every 5 seconds.
• 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.