
– 32 –
Terminals on
ERC (Element
terms are on
tops of large
relays.)
Voltage,
standby (No
relays
energized.
Voltage, Broil
(Mode Active)
Voltage, Bake
(Mode Active)
Voltage,
Convection
Bake (On
convection
bake models.)
L1 - N
120 VAC (If not, harness may be bad.)
L1 - L2
240 VAC (If not, harness may be bad.)
L1 – BAKE
240 VAC (Mode
active, bake
relay OFF, DLB
relay ON.)*
-0 VAC (When
bake element
ON. If not,
relay/ERC may
be bad.)**
240 VAC (Mode
active, bake
relay OFF, DLB
relay ON.)*
L1 - BROIL
~0 VAC (When
broil element
ON. If not,
relay/ERC may
be bad.)**
240 VAC (mode
active, broil relay
OFF, DLB relay
ON)*
240 VAC (Mode
active, broil relay
OFF, DLB relay
ON.)*
L1 - CONV (On
convection
models.)
~0 VAC (If not,
relay may be
bad.)
240 VAC (Mode
active,
convection relay
OFF, DLB relay
ON.)*
240 VAC (Mode
active,
convection relay
OFF, DLB relay
ON.)*
~0 VAC (When
convection
element ON. If
not, relay/ERC
may be bad.)**
MDL - COM
120 VAC (door
closed)
– – –
L1 - CW (On
convection
models.)
120 VAC (Door
closed.)
120 VAC (Door
closed.)
120 VAC (Door
closed.)
~0 VAC (When
convection fan is
spinning
clockwise.)
L1 - CCW (On
convection
models.)
120 VAC (Door
closed.)
120 VAC (Door
closed.)
120 VAC (Door
closed.)
~0 VAC (When
convection fan is
spinning counter
clockwise.)
* If not, check indicated element and harnessing.
** Relay is on only when calling for heat (240 VAC when not calling for heat).
ERC Access
The oven ERC for the oven system consists of the
control panel, keypads, oven sensor, door lock
assembly, and convection fan.
Key Panel Test
1. Touch each keypad.
2. If the control panel is functioning properly, the
following should occur:
• Bake, broil, (convection bake and
convection roast on some models), clean, timer, clock, stop time and cook time modes -
audible
tone plus display showing mode of operation selected.
• Clear/Off -
Audible tone and display shows time of day.
• Number keypads can only be used after another function has been selected.
Control Voltage - ERC
Mode and temperature selection is necessary for operation of relay contacts. This model incorporates
double line break. There is no voltage on the elements when the control is in standby.
Oven ERC (Rear View)
Summary of Contents for JB905
Page 46: ... 46 JB988 Schematic Schematics and Wiring Diagrams ...
Page 47: ... 47 JB988 Wiring Diagram ...
Page 48: ... 48 JB968 Schematic ...
Page 49: ... 49 JB968 Wiring Diagram ...
Page 50: ... 50 JB905 Schematic ...
Page 51: ... 51 JB905 Wiring Diagram ...
Page 63: ... 63 Notes ...