Suburban SW10P Service Training Manual page 17

OF OPeratiOn & trOubleSHOOting cHart
• Confirm power present at ON/OFF Switch .......................................................
(10.5 volt DC min - 13.5 volt DC max)
• Confirm that thermostat and ECO are closed, and that power is present at .....
thermostat
• Confirm power is present on red wire to module board, and on blue wire to ....
reset light, confirm that ground connections are secured, test reset light bulb
• Inspect burner and orifice for debris, confirm gas and spark are ......................
present, inspec electrode for proper gap (1/8"), test module board with field
tester
• Inspect electrode and wire connections, test module board with field tester ....
• Check for proper voltage (10.5 min - 13.5 max) on brown wire at ....................
gas valve (during TFI), confirm proper gas pressure available (11" WC - 14"
WC), measure resistance through solenoids (30-50 OHM's), inspect brown
wire for open or short
• Inspect electrode for: proper gap, damaged porcelain insulator, ......................
carbon build up on tip, loose or corroded wire connections, confirm proper
flame impingement at electrode, inspect burner and orifice for debris, confirm
that gas pressure is correct, test module board with field tester
• Inspect electrode for crack in porcelain, proper gap (1/8"), ..............................
or carbon build up on tip, ensure that spark is present at electrode tip, inspect
burner for debris, inspect electrode wire for short (including against the back
side fo the appliance door when in closed position)
• Follow previously described trouble shooting procedures ................................
• Inspect by-pass valve for proper position, confirm that all plumbing system ....
mixing valves are closed (including outside shower valves), confirm that
thermostat is operating correctly, confirm that diffuser tubes are properly
installed
• Inspect that thermostat is secure to tank and opening at correct temberature .
130 degrees F, plus or minus 5 degrees F
• Install air pocket in tank, confirm water temperature is within operating range
130 degrees F, plus or minus 5 degrees F, inspect relief valve for signs of
contamination at seal
• Check for proper gas pressure (11"WC-14" WC), inspect burner .....................
flue tube, and vent for debris
teSt PrOceDureS
Confirm and correct power supply.
Reset ECO if open, confirm that water
in tank is cold, replace thermostat if
found to be defective.
Repair or replace wiring if defective,
replace module board or switch/lamp
assembly if found to be defective.
Clean or replace burner, correct
electrode gap, replace module board if
found to be defective.
Correct electrode gap, clean or correct
electrode wire connections, replace
module board if found to be defective.
Correct voltage supply, correct gas
pressure, replace gas valve if found to
be defective, repair or replace wire if
defective.
Replace electrode, module board,
gas valve, or electrode wire if found
defective.
tube, correct gas pressure.
Replace electrode or wire if defective,
clean electrode tips with Emory cloth,
adjust electrode if sparking incorrectly,
clean or replace burner tube.
To reset the appliance from LOCKOUT
mode, turn the power switch off for
5-10 seconds and then turn the switch
back on.
Set by-pass valves to correct position,
close open mixing valves, replace
thermostat if defective, replace diffuser
tube ('s).
Replace or secure thermostat
Replace thermostat or relief valve
if
accumulator tank to plumbing system
per
instructions.
Set to correct gas pressure, replace
valve if found to be defective, clean or
replace burner tube, clean flue tube
and vent assembly.
17
cOrrective actiOn
Clean or replace burner
found to be defective,
manufacturers installation
install