Tiffin Motorhomes Allegro Bus 2011, Руководство пользователя

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M A J O R A P P L I A N C E S & A C C E S S O R I E S
4-22
¾
Air is in the water line. Bleed air by turning on all water taps.
Heater ignites but water temperature is too low.
¾
Check thermostat setting.
¾
The water flow may be so high as to exceed the capacity of the heater particularly if your supply water
is very cold. Slow the water flow.
¾
The heater may be subjected to excessively strong winds, cutting the efficiency. Shield from wind or
change the location of the unit.
¾
The gas pressure may be too low. Check the regulator pressure. The LPG pressure should be 11 water
column inches, (WCI) while the heater is running. A gas-testing gauge should be installed on the
manifold tap so that it may be read while heater is running. If it is too low, turn up the gas regulator to
the proper pressure. Be sure the gas flow control valve is in full “on” position. This should only be
done by a qualified technician.
¾
The gas flow may be too low due to improper gas line diameter (under 3/8” outside diameter). The gas
line may be excessively long (over 20-30 feet) or the on/off solenoid at the tank (if you have one) may
have an orifice that is too small (under 3/16” of an inch).
¾ Check the heater for an airflow obstruction and clean.
¾ Check the two conductors, black and white to the modulating valve. It should be securely plugged in to
the control board terminal.
Water temperature is too hot or no temperature control.
¾
The thermostat is set too high.
¾
Fuel tank regulator is set too high. Have the regulator checked by a qualified technician.
¾
Be sure that the hot and cold water lines are not reversed on the heater hook-ups. The unit will not
function properly and water could become extremely hot.
¾
If water temperature reaches 165ºF, the high temperature limit switch (ECO) will trip, shutting the
heater down. Locate the high temperature switch (two light blue wires) at the upper right hand of the
heat exchanger. Push the reset button in the center of the switch. (Early models only. Newer models
have an auto reset ECO).
Low heat rise. Excessive water flow is required to trigger water heater.
¾
If you find that your heater requires excessive flow to activate it (over ½ gallon per minute), it is likely
that you have cold water bleeding into the hot water side of your water system. Check that valves and
faucets are closed when not in use. If there is an on/off button on your showerhead, always turn the
water valves off after the shower to prevent cold water from bleeding into the hot water system. This
will keep the heater from functioning properly.