A.O. Smith 110, Руководство по устранению неисправностей

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Troubleshooting Guide
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ERROR CODE 391 [510 (T ‐ D2)], TWO FLASHES/39 [110 (T ‐ KJR2), 310 (T ‐ K4)]
AIR ‐ FUEL RATIO ROD FAILURE
1) Check that the wire connections are secure and free of
burns or cuts.
2) Check that the clear plastic tube connecting the
proportional gas valve to the combustion chamber is
attached.
3) Clean the AFR (p. 25).
ERROR CODE 441 [510 (T ‐ D2)]
FLOW SENSOR
Part of an Easy ‐ Link system (510 (T ‐ D2) only), the master unit
signaled for an additional heater to activate and it did not.
1) Verify that water is being supplied to the heater in error.
2) Verify that the wires are connected to the computer board.
3) Check the inlet filter for any debris. See p. 21.
4) Check the flow sensor for debris.
ERROR CODE 510[510 (T ‐ D2)], SIX FLASHES/51 [110 (T ‐
KJR2), 310 (T ‐ K4)]
ABNORMAL GAS VALVES
Driving circuit fault for the main or solenoid gas valves.
1) If the hot water is shut off, but flames
are still visible through the sight glass,
immediately shut off gas and power to
the unit and contact the Technical
Service Department.
2) Check the wire connections to the gas
valve assembly for burns or cuts.
3) If the unit was recently rebuilt, make
sure that each gas valve wire is plugged
into the proper place.
4) Verify that the supply gas pressure is
within the specified limits. Too high of
an inlet gas pressure may cause the
main gas valve to jam or could be damaged.
ERROR CODE SIX FLASHES/55 [110 (T ‐ KJR2), 310 (T ‐ K4)]
ABNORMAL SOLENOID GAS VALVE
Driving circuit fault for the solenoid gas valve.
1) If the hot water is shut off, but flames are still visible through the burner sight window, immediately
shut off gas and power to the unit and contact the Technical Service Department.
2) Check the wire connections to the gas valve assembly for burns or cuts.
3) If the unit was recently rebuilt, make sure that each gas valve wire is plugged into the proper place.
4) Verify that the supply gas pressure is within the specified limits. Too high of an inlet gas pressure
may cause the main gas valve to jam or could be damaged.
Figure 10
Figure 11
Figure 12