MrCool DIY E Star Series Troubleshooting Guide

Troubleshooting 16
2.Field Maintenance
Possible causes of trouble
Compressor stuck
Shortage of refrigerant
Restricted liquid line Dirty air ter
Dirty evaporator coil
Insucient air through evaporator coil Overcharge of refrigerant
Dirty or parally blocked condenser
Air or incompressible gas in refrigerant cycle
Short cycling of condensing air
High temperature condensing medium Insucient condensing medium Broken compressor internal parts
Inecient compressor
Exp
ansion valve obstructed
Expansion valve or capillary tube closed completely
Leaking power element on expansion valve Poor installaon of feeler bulb Heavy load condion
Loosen hold down bolts and / or screws
Shipping plates remain aached
Poor choices of capacity
Contact of piping with other piping or external plate
Unit will not start
Compressor will not start but fans run
Compressor and condenser (outdoor) fan will not
start
Evaporator (indoor) fan will not start
Condenser (Outdoor) fan will not start
Unit runs, but shortly stops
Compressor short-cycles due to overload
High discharge pressure
Low discharge pressure
High sucon pressure
Low sucon pressure
Unit runs connuously but insucient cooling
Too cool
Compressor is noisy
Horizontal louver can not revolve
Test method / remedy
Replace the compressor
Leak test
Replace restricted part
Clean or replace Clean coil
Check fan Change charged refrigerant volume
Clean condenser or remove obstacle
Purge, evacuate and recharge
Remove obstrucon to air ow
Remove obstrucon in air or water ow
Remove obstrucon in air or water ow
Replace compressor
Test compressor eciency
Replace valve
Replace val
ve
Replace valve
Fix feeler bulb Check heat load Tighten bolts or screws Remove them
Choose AC of lager capacity or add the number of AC
Recfy piping so as not to contact each other or with external
plate
Refrigerant Circuit
Others

MrCool DIY E Star Series Specifications

General

Brand	MrCool
Model	DIY E Star Series
Category	Air Conditioner
Language	English