VGSC306 DIAGNOSTICS BAKE
NOTE: RANGE MUST BE TURNED ON FOR AT
LEAST 40 SECONDS BEFORE MAKING THESE
TESTS.
Check for 120 VAC at J1-4 to J1-10 (see illustration
#1). No voltage, diagnose main wiring harness.
120VAC should always be present at this point.
Disconnect the line voltage to the range for
approximately 1 minute. Then reconnect the supply
voltage. If the supply voltage is not restored check
for an open overload protector or a broken wire
from the terminal block.
DOES BAKE CYCLE FUNCTION PROPERLY?
NO: Check POLARITY of supply. Even if no
ground is connected, the module will not be able to
sense flame presence at the ignitor if the polarity is
reversed.
Does the BAKE BURNER establish a flame then
shut off?
YES:
Does spark continue after flame is established?
NO: Replace Valve.
YES: Check the ignitor for continuity. If no
continuity, replace ignitor. If supply voltage
polarity is correct, check BAKE IGNITOR
wire for loose connection. If connection is
good, replace module.
Does the BAKE BURNER establish a flame then
shut off?
NO: Is 120VAC present to J1-4 to J1-6
(illustration #2)?
NO: Diagnose main wiring harness and / or
thermostat.
Is 120VAC present from J1-4 to J1-6?
YES:
Is 120VAC present from J1-4 TO J1-7
(illustration #3)?
YES: Diagnose THERMOSTAT . The module will
lock out if a call for Bake and Broil exists
simultaneously.
Is 120VAC present from J1-4 to J1-7?
NO: Remove call for Bake (turn Thermostat off) test
valve continuity, measure resistance between
J1-1 and J1-2, then J1-1 to J1-3 (illustration
#4). Are both resistances 216 ohms ± 30 ohms?
O: Measure resistance at the valve, if resistances
YES: eter to J1-1 (+) and J1-2 (-),
YES: check the
oes spark occur at ignitor?
oes spark occur at Broil ignitor, not Bake?
lves.
oes spark occur at Broil ignitor, not Bake?
. If
oes spark occur at ignitor?
out of tolerance for
N
are different then measured at module,
diagnose wiring harness. If resistances are the
same as measured at module, then replace the
valve. Remove call for bake (turn thermostat
off), test valve continuity; measure resistance
between J1-1 and J1-2, then J1-2 to J1-3
(illustration #4). Are both resistances 216
ohms ± 30 ohms?
Connect DC voltm
wait 40 seconds then start a Bake cycle. Six
seconds after the Bake cycle is started, does a
DC voltage of 7 to 15 VDC appear?
If voltage is higher the 15VDC ,
main wiring harness for bad connections. If
OK, replace valve.
D
NO:
D
YES: Check for correct wiring to Bake / Broil va
D
YES: Check ignitor for crack in the ceramics
cracks are found, replace ignitor. Diagnose
Bake ignitor wiring harness. Check for
reversed Bake and Broil wires at the valves. If
OK replace module.
D
YES: The ignitor position is
proper ignition. Adjust or replace ignitor and
burner.
91
(17 pages)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals