Control Board Error Codes; Part 6: Troubleshooting - Rheem AdvantagePlus HE55-100N Use & Care Manual

PART 6: TROUBLESHOOTING

Table 6-1: 926 Control Board Error Codes
Code Description
High temperature switch
¢
F00 limit exceeded
(194°F [90°C])
Vent temperature limit
¢
F01
exceeded
Interrupted or shorted
¢
F02
upper temperature sensor Check the electrical connection to the appropriate temperature sensor, if connection is okay, replace bad
Interrupted or shorted
¢
F03
lower temperature sensor
Upper temperature sensor
¢
F05
exceeds 194°F (90°C)
Lower temperature sensor
¢
F06
exceeds 194°F (90°C)
No flame detected – The
unit will make three
attempts at ignition before
¢
F09
the control goes into this
lockout condition. Will
reset in 1 hour.
Loss of Flame Signal –
The unit will relight 4 times
¢
F10 before the control goes
into this lockout condition.
Will reset in 1 hour.
False Flame Signal – The
water heater will lock out if
¢
F11 it senses a flame signal
when there should be
none present.
Combustion Fan Speed
Incorrect – The water
heater will lock out if it
¢
F13 senses that the fan speed
is less than 70% of
expected rate for more
than 60 seconds.
NOTE: IF YOU REPLACE A PART TO REMEDY A FAULT, IT IS RECOMMENDED THAT YOU CYCLE THE UNIT AT
LEAST THREE OR FOUR TIMES TO ASSURE THE FAULT HAS BEEN RESOLVED.
Remedy
1. Try reset, if F00 repeats, create a demand for hot water (n DANGER: use caution to prevent burn
injury) If water is above 194°F (90°C) test upper and lower temperature sensor with an ohmmeter.
(Refer to resistance chart, this section.) Replace bad sensor. If water is below 194° (90°C) test high
temperature switch and wiring with ohmmeter. Switch should be closed at this point, if not, replace switch.
2. If unit did reset successfully, let the unit run and go into the status menu to check the upper and lower
temperature sensor. If either reading displayed does not make sense, check appropriate sensor with
ohmmeter. (Refer to resistance chart this section.) Replace bad sensor. Do an OHMs reading on both
sensors to check continuity.
1. Inspect all flue piping. If the flue is damaged or shows signs of overheating then repair or replace the flue
parts as necessary before proceeding.
2. If the flue piping system is intact, not damaged and there is no sign of the flue overheating such as
discoloration or melting, then push the red reset button on the flue switch.
3. Be sure the unit is connected to a water supply and full of water.
4. Push the RESET button on the unit control panel. The appliance should light. If the appliance lights
proceed to step 5. If the appliance does not light and the display again begins to flash F01, inspect the
wiring to the flue switch, repairing or replacing as necessary. If the wiring is intact, replace the flue switch
using care to mount the new flue switch in the same position and mounting holes as the old one. If the
display flashes a code other than F01, follow the troubleshooting guide for that code.
5. Observe operation for 5 minutes. Place the probe of an exhaust analyzer into the flue system within 6
feet of the unit appliance. The exhaust temperature should not rise above 190°F (88°C) after several
minutes of operation.
6. If the flue temperature is below 190°F (88°C) and the appliance again goes into lockout displaying F01,
replace the flue switch using care to mount the new flue switch in the same position and mounting holes
as the old one. If the display flashes a code other than F01, follow the troubleshooting guide for that code.
7. If the flue temperature increases to over 190°F (88°C), Consult the AdvantagePlus factory for further
assistance.
sensor.
If water in tank is not greater than 190°F (88°C), check wiring and repair if faulty. If the wiring is okay, check
appropriate sensor with ohmmeter and compare to reading in resitance chart. If reading does not agree with
water temperature, replace bad sensor.
1. Watch the igniter through the observation window provided.
2. f there is no spark, check the spark electrode for the proper ¼" (0.64 cm) gap.
3. Remove any corrosion from the spark electrode and flame rectifier probe.
4. If there is a spark but no flame, check the gas supply to the water heater.
5. If there is a flame, check the flame sensor.
6. Check any flue blockage or condensate blocks.
1. Monitor the gas pressure to the unit while in operation.
2. Assure that the flame is stable when lit.
3. Check to see if the green light on the display module is out while the water heater is running.
4. If the green light doesn't come on or goes off during operation check the flame signal on the status menu.
5. If the signal reads less than 1 microampere, clean the flame rectifier probe.
6. If the flame rectifier probe continues to read low, replace it.
1. Turn the gas off to the unit at the service valve.
2. If the flame signal is still present replace the igniter.
3. If the flame signal is not present after turning off the gas supply, check the gas valve electrical connection.
4. If there is no power to the gas valve, remove the valve and check for obstruction in the valve seat or
replace the gas valve.
5. Turn the gas on at the service valve after corrective action is taken.
1. Check the combustion air fan wiring.
2. Replace the combustion air fan.
3. Replace the control board.
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