Rheem SVC 810, Руководство по устранению неисправностей

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SVC 810 Tankless Troubleshooting Manual
16
Ensure appliance is properly grounded.
Check gas solenoid valves for open or short circuits.
Check power supply for proper voltage and voltage drops.
Disconnect remote control; see if it runs.
Disconnect and re-connect all wiring harnesses on unit and PC board.
13 Oxygen Depletion Sensor (Poor
or Improper Combustion) Ensure there is plenty of fresh air to the unit.
Unit needs 1 square inch for each 1,000 BTU of input. That is up to 200
square inches or a space 14 ½ x 14 ½ inches.
14 Overheat Wrap Fault Ensure high fire and low fire manifold pressure is correct.
Check gas type of unit and ensure it matches gas type being used.
Check heat exchanger for cracks and/or separations.
Check for improper program chip.
Check for restrictions in airflow around unit and vent terminal.
15 Boiling Safety Device Check for closed water heater inlet valve or restrictions in cold water
inlet pipe (must be fully open).
Check for clogged heat exchanger (scale buildup).
On commercial water heater, lower set point temperature below 180
0
F at
high altitude.
16 Over Temperature Warning Check for clogged heat exchanger.
Check for restrictions in airflow around unit and vent terminal.
21 Malfunction of Air Intake Filter
Switch (Indoor Products Only) Make sure air filter door is properly seated.
Make sure front panel is properly installed.
24
Malfunction of Operational
Switch Disconnect remote control and retry.
Verify unit is electrically grounded.
Press max button on PCB to reset; Press min button on PCB to reset.
29 Heat Exchanger Outlet Temp.
Too Low Clean air inlet screen.
Clean heat exchanger fins
31 Water Inlet Temperature Sensor
Fault Check sensor wiring for damage.
Ohm out sensor
Check and clean scale from sensor.
32 Heat Exchanger Temperature
Sensor Fault Check sensor wiring for damage.
Ohm out sensor
Check and clean scale from sensor.
33 Outgoing Water Temperature
Sensor Fault Check sensor wiring for damage.
Ohm out sensor
Check and clean scale from sensor.
34
Combustion Air Temperature
Sensor Fault Check sensor wiring for damage; Ohm out sensor
Check and clean ambient air temperature sensor.
Ensure fan blade is tight on motor shaft and it is in good condition.
Check for restrictions in airflow around unit and vent terminal.
35
Improper Thermistor
Connection Check that all thermistors are connected to proper connections on PCB.
38 ODS Sensor has malfunctioned. The sensor itself is not responding to a self check from the printed circuit
board.
Check wiring harness.
Check for proper voltage to ODS
51 Gas Inlet Solenoid Valve Fault Check gas inlet solenoid valve wiring harness for loose or damaged
terminals.
Ohm out solenoid valve.