Carrier 38SE User Manual
Page 12
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TROUBLESHOOTING CHART*
Condenser Fan On
Condenser Air Restricted
Condenser Air Recirculating
Noncondensables in System
Refrigerant Overcharge
Improper Line Voltage
Refrigerant System Restriction
Loose Electric Connections
Faulty Run Capacitor
Condenser Fan Off
Fan Slipping on Shaft
Loose Electric Connections
Fan Motor Overload Open
Fan Motor Bearings Stuck
Fan Motor Defective
Low Suction Pressure
Low Refrig Charge
High Suction Pressure
Low Head Pressure
Defective Compressor Valves
Slightly Low Suction Pressure
Dirty Filters
Partially Restricted Airflow
Coil Partially Iced
Slightly Low on Refrigerant
Duct Restricted
Dampers Partially Closed
Evaporative Fan Running
Low Refrig Charge
Restricted Refrig Flow
Restricted Capillary
Defective TXV
Restricted Evaporator Air
Dirty or Iced Coil
Plugged Filter
Dampers Closed
Restricted Ductwork
Evaporator Fan Stopped
Defective Fan Relay
Loose Leads
Overload Open
Burned Out Motor
Broken Belt_____________
Contactor Open
Dead Transformer
Thermostat Circuit Open
Faulty Control Relay
Overload Open
Contactor Coil Open
Loose Connection
Contactor Closed
Loose Leads at Compressor
Loose Leads at Contactor
Motor Windings Open
Internal Compr Overload Open
Contactor Closed, Then Opens
Overload Opens
Compressor Stuck
Faulty CPCS Boord______________
*To troubleshoot control circuit, see Control Circuit Troubleshooting Chart, page 9.
For replacement items use Carrier Specified Parts.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Tab 4
Form 38SE-3S1 Supersedes 38GR-3SI, 38SE-2SI
Printed in U S.A
1076
3-75
PC 101
Catalog No. 533-827
1
Book
1
1 Tab
3a