Fault Finding
9
COMPONENT TESTING
ITEM
CONDITION
TESTING FOR
REPLACE
Overtemp (Push Reset).
Oven power OFF.
Continuity through switch.
If open circuit.
Voltage at Overtemp.
Check power to switch and power out of switch.
If no power out.
Transformer
Voltage at Transformer.
With controller connected 12Vac output.
If no 12Vac.
Controller
Voltage at Controller.
Output to relays, lights fan.
If no.
Door Switch
Oven power OFF.
Continuity through switch.
If open circuit.
Temperature probe
Disconnected.
Resistance.
If not correct.
Oven power OFF.
Continuity.
If open circuit.
Voltage at Element.
Check current draw.
If low or zero.
Relay
Voltage at Relay Coil.
Does relay switch.
If no.
Relay contacts
Voltage at Relay Contacts. Check power to switch and power out of switch.
If no power out.
Fan Motor
Voltage at Fan.
Does fan rotate.
If no.
Element
ELEMENT RESISTANCE & CURRENT VALUES
Model Watts
Voltage
Resistance ± 5% @20
o
C (68
o
F)
Current ± 5%
E31D4 Bottom
2200W
230 - 240V
26.5
Ω
9.1A @ 240V
21.6
Ω
9.6A @ 208V
10A @ 220V
Top Outer 900W
230 - 240V
64 0
Ω
3.8A @ 240V
Top Inner 2000W
230 - 240V
28.8
Ω
8.3 @ 240V
Top Outer 900W
208 - 220V
53.8
Ω
3.9A @ 208V
4.1@ 220V
Top Inner 2000W
208 - 220V
24.2
Ω
8.6A @ 208V
9.1@ 220V
Bottom
2000W
208 - 220V
TEMPERATURE PROBE RESISTANCE PT1000
Temperature
o
C (
o
F)
Resistance ± 5%
0 (30)
1000
Ω
10 (50)
1039
Ω
20 (68)
1078
Ω
30 (86)
1117
Ω
40 (104)
1155
Ω
50 (122)
1194
Ω
60 (140)
1232
Ω
70 (158)
1271
Ω
80 (176)
1309
Ω
90 (194)
1347
Ω
100 (212)
1385
Ω
110 (230)
1423
Ω
120 (248)
1460
Ω
130 (266)
1498
Ω
140 (284)
1536
Ω
150 (302)
1573
Ω
160 (320)
1610
Ω
170 (338)
1648
Ω
180 (356)
1685
Ω
