Whirlpool MH1150XMQ, Tech Sheet

Page: 5 / 12

TECH SHEET - DO NOT DISCARD PAGE 5
FOR SERVICE TECHNICIAN'S USE ONLY PART NO. 8184997 /4619-651-98301
MONITOR
SWITCH
PRIMARY
INTERLOCK
SWITCH
SECONDARY
INTERLOCK
SWITCH
(NC) (NO) (NC)
(NO) (NC) (NO)
L N
DOOR CLOSED
MONITOR
SWITCH
PRIMARY
INTERLOCK
SWITCH
SECONDARY
INTERLOCK
SWITCH
(NC) (NO) (NC)
(NO) (NC) (NO)
L N
DOOR OPEN
Switch Check By
Door
Open
Door
Closed
Primary
Interlock
Disconnect the wires at the Primary Interlock Switch.
−
+
Check from the common terminal (White/Brown wires) to
the normally open terminal (White wires).
Secondary
Interlock
Disconnect the wires at the Secondary Interlock Switch.
−
+
Check from the common terminal (Black wires) to the
normally open terminal (White wire).
Disconnect the wires at the Secondary Interlock Switch.
+
−
Check from the common terminal (Black wires) to the
normally closed terminal (Orange wire).
Monitor
Disconnect the wires at the Monitor Switch.
+
−
Check from the common terminal (White/Blue wires) to
the normally closed terminal (Red wires).
(+) Continuity (–) No Continuity
NOTE: These diagrams are not intended to show a complete circuit; they represent the position
of switches during “DOOR OPEN” and “DOOR CLOSED” (continuity checks only).
PRIMARY, SECONDARY, AND MONITOR INTERLOCK SWITCH CHECKOUT PROCEDURE
Hood Fan
Motor Assembly
Primary Interlock
Switch
Touch Panel
(Membrane Switch)
Monitor Interlock
Switch
Secondary
Interlock Switch
Hood (Cooktop)
Lamp
Cavity Lamp
H.V. Capacitor
Magnetron
H.V. Transformer
H.V. Diode
Line Fuse
Fuse Holder
PCB
(Control Board)
Assembly
Motor Capacitor
Turntable
Motor
Cavity Thermostat 1
Opens at 165°C (329°F)
Closes at -35°C (-31°F)
Exhaust
Opens at 45°C (113°F)
Closes at 60°C (140°F)
Fan Thermostat
Magnetron
Opens at 145°C (293°F)
Closes at 70°C (158°F)
Thermostat
Cavity Thermostat 2
Opens at 125 C (257 F)
Closes at -35 C (-31 F)
PARTS LAYOUT
Not to Scale