Monarch SE 2004 - Ignition Module Function

176 | Section 4 Appliances ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ ----------------- Monarch SE 2004
Heating Water with LP-Gas:
• Make sure the primary LP-Gas valve is open.
• Turn ON the Water Heater 12 Volt switch. The indicator light on the
switch will illuminate briefly then go out when the burner ignites. The
burner will make an audible "roar" when lit.
• The automatic ignition circuit board will attempt three ignition cycles to
light the burner. If the burner does not light after the third attempt, the
circuit board will "lock-out" and the indicator light on the switch will
glow steady.
• Check the level of LP-Gas in the tank and make sure the primary LP-Gas
valve is on. Cycle the LP switch off then back on to reset the ignition
board.
NOTE: The LP-Gas and AC electric functions may be on at the same
time. This will speed the recovery process of heating water for large
volume use.
CAUTION: It is recommended not to operate the water heater on
LP-Gas while the motorhome is in transit. Be sure the water heater is
off before refueling.
WARNING: Before beginning any service or work on the water heater
make sure the LP-Gas is turned off, the 120 Volt AC source has been
disconnected and the 12 Volt DC source has been disconnected. Failure to do
so can result in explosion, fire or injury. Water has cooled enough to
prevent scalds or burns.
Indicator Lamp:
• Illuminates briefly when the LP switch is turned on, ignition occurs
and the lamp goes out.
• If the burner does not light within six to nine seconds the ignition
board will attempt two more ignition cycles. If the burner does not
light after the third attempt, the indicator lamp glows steady.
The ignition module will perform the following sequence:
1. The module has a timing circuit, which allows six to nine seconds
for ignition to occur.
2. Initially the module supplies current to the gas valve. At the same
time, it produces a high-voltage current supply to the electrode to
produce a spark at mixture tube.
3. Upon ignition, the electrode senses the presence of flame.
4. If ignition does not occur, the module will wait 20 to 40 seconds
before the next ignition cycle.
Ignition Module
Function