Error A007 Exhaust Pressure Switch Open; Error A008 Pof/Blower Mismatch; Error A010 End Of Line Test Failure; Error A016 Eco Switch Is Open - Rheem TRITON Service And Training Manual

Troubleshooting Error Codes

Error A007 Exhaust Pressure Switch Open

The exhaust pressure switch is a normally closed switch. It will only open
in the event of excess pressure in the exhaust venting. Check the following:
• Check wiring to the switch to ensure no wires have been broken,
damaged or disconnected.
• Confirm tubing from switch to the air intake is properly connected and not damaged.
• With the unit off, check continuity on the pressure switch. If no continuity present, replace the exhaust
pressure switch.
• Check exhaust vent for clogs and remove if present.
• Check for condensate backing up into exhaust tee.
You can clear this error code by pressing clear button on the current alarm screen. If problem persists a part
replacement may be required.

Error A008 PoF/Blower Mismatch

The Proof of Fan pressure switch is closed when the blower is off. Check the following to see if the
problem can be resolved.
• If the blower is running while, the alarm is present, follow troubleshooting for error A025.
• If the blower is not running, check to ensure the PoF switch has not been jumped. If not, check continuity
to the switch. It should be open when the blower is off. If the switch is reading closed (has continuity)
with the blower not running, replace the PoF switch.
• Clear the alarm and see if the A008 returns. If A008 returns and the pressure switch is reading open (no
continuity), replace the ignition control board.

Error A010 End Of Line Test Failure

This error should never present on a unit in the field. If this error should occur, replace the ignition
control board.
Error A016 Energy Cut Off Switch Is Open
The tank temperature has exceeded the allowable temperature.
• Confirm water in unit is not above 200°F
• Inspect wiring and connections on both the upper temperature probe and control. If
wiring is properly connected, try to clear alarm through display.
• If alarm does not clear, cycle power off, and check the ECO using a multi-meter.
Disconnect wiring from ECO/Temp probe. Check for continuity across pins 3 & 4
of the probe. If no continuity found, replace ECO/Temp probe.
• If continuity is present through probe, reconnect wiring to ECO/Temp probe.
Disconnect the P2 harness from the control board and check for continuity across
the two orange wires. If no continuity is present through wiring, replace the wiring
harness. If continuity is present through both the probe and wiring. Replace the
control board.
• Replace ECO/Temp probe ONLY if it is OPEN but the display is reading a tank
temperature of less than 200°F.
Triton Service Manual SVC1020T ; Rev 4
3 5
80 and 100 gallon chassis