Tiffin Motorhomes 2014 Phaeton, Owner'S Manual

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TIFFIN MOTORHOMES –PHAETON® Chapter 4 MAJOR APPLIANCES & ACCESSORIES
Some common trouble-shooting situations are listed below:
Heater does not come on when the water turns on. Green LED not flashing.
> Be sure all electrical connectors are secure and the polarity is correct. (Red wire to positive terminal) of
RV electrical panel.
> Be sure power is on and the panel breaker is not tripped.
> Check electrical contacts in electronics drawer. Be sure the connector with red and black power wire is
plugged into board. Using a voltmeter, check for 12 volts on this connector.
> The fusible link in this wire might be blown. Replace power cord.
> Be sure there is a battery in the system. Never connect the heater directly to a power converter. Some
converters have circuits that are not pure DC. (See the tag on red and black power wire on the back of heater).
Green LED flashing but heater does not come on when water flows.
> Be sure that no water-mixing valve has been left in the on position, using the showerhead as a shut off.
This will permit water to bypass the water heater and bleed cold water into the hot water system. Always turn
off both hot and cold water valves after using. Be sure that the bypass valve at the water connections is in
the “off” position.
Heater does not come on when the water turns on. Red LED is flashing a series of three red flashes,
or a double red flash.
> The T-Mid thermister (pair of yellow wires going to heat exchanger) is not connected or defective. Be sure
wiring harness connectors are secure and that wires are not chaffed. Be sure connector is secure on
electronics board. If these are secure, re-power unit. If the red LED still flashes, contact the manufacturer for a
replacement thermister probe.
Green LED is flashing but there is no ignition when water is on.
> Be sure the gas valve at the tank is “on” and there is gas in the tank.
> Be sure that gas is turned on and water flow is at least 0.4 gallon/minute.
> Check that yellow ignition wire is clipped to the spark electrode terminal and is not touching anything else.
Align so that it is not in contact with anything but the terminal.
> With water running, check that the paddle wheel in the flow meter is turning counter-clockwise. This can be
visually observed with the access door open by looking through the clear window of the flow meter.
If it is not turning with the water flowing, there is an obstruction in the flow meter. Remove the clear cover of
the flow meter by firmly pushing on the cover and turning counter-clockwise (approximately 1/8” turn) to
remove the plastic cover. Remove the paddle, taking care not to lose the “O” ring seal and the pin that the
paddle rotates on. Remove any debris and re-assemble by reversing the procedure.
To secure the window, line up the guides, firmly push to seat and turn clockwise.
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