Multiplex MB-8-1 - Low Ice Production

Part Number STH034 3/12 109
Low Ice Production
Problem Possible Cause Remedy
Low ice
production.
Refrigerant Line Refrigerant leak Check for leaks with a
leak detector. Reweld
leak, replace drier and
charge with refrigerant.
The amount of refrigerant
is marked on nameplate
or label
Refrigerant line
Blocked
Replace the blocked
component
Overcharged Recharge
High-Side
Pressure Too
High
Dirty air filter or
condenser
Clean
Ambient
temperature too
warm
Relocate to cooler area
Fan rotating too
slow
See “Other” table,
“Abnormal noise,” “Fan
Motor”
Condensing unit out
of order
Check condensing unit
Expansion Valve
(not adjustable)
Low-side pressure
too low
Replace TXV
Low-side pressure
too high
See if expansion valve
bulb is mounted properly,
and replace the valve if
necessary