Multiplex MB-8-1, Technician'S Handbook

Page: 107 / 178

Part Number STH034 3/12 107
Water has
been
supplied,
but the ice
machine will
not start.
Water control
Relay
Bad contacts Check for continuity and
replace
Bin Control Bad contacts Check for continuity and
replace
Activator does not
move freely
Clean axle and its
corresponding holes or
replace bin control
Gear Motor
Relay
Coil winding opened Replace
Bad contacts
Check for continuity and
replace
Control Timer
(Printed Circuit
Board)
Broken Replace
Gear Motor
Protect Relay
Coil winding opened Replace
Bad contacts
Check for continuity and
replace
Water has
been
supplied.
Fan motor
starts, but
compressor
and gear
motor will
not start.
Gear Motor
Fuse (Bussman
GMD 1.5A)
Blown fuse See “Other” table, “Gear
motor fuse blows or
circuit breaker trips
frequently.” Find out the
cause and replace the
fuse
Thermal
Protector (Gear
Motor)
Bad contacts Check for continuity and
replace
Gear motor
starts, but
compressor
will not start
or operates
intermit-
tently.
X2 Relay on
Control Timer
Bad contacts Check for continuity and
replace
Coil winding opened Replace timer
Starter Bad contacts Check for continuity and
replace
Coil winding opened Replace
Loose connections
Tighten
Start Capacitor
or Run
Capacitor
Defective Replace
Compressor Loose connections Tighten
Motor winding
opened or grounded
Replace
Motor protector
tripped
Find out the cause of
overheat or overcurrent
Power Supply Circuit ampacity too
low
Install a larger-sized
conductor
Problem Possible Cause Remedy