Troubleshooting chart – Carrier 38GC 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
Defective Low-Pressure Switch
No Power at Open Contactor
Low-Pressure Switch Setting
Blown Fuses
High Suction Pressure
Power Failure
Low Head Pressure
Power at Open Contactor
Defective Compressor Valves
Faulty Control Relay
Slightly Low Suction Pressure
Holding Coi 1 Open
Dirty Filters
Internal Compr Overload Open
Partially Restricted Air Flow
Low-Pressure Cutout Open
Coil Partially Iced
Overloads Cycled
Slightly Low on Refrigerant
Compressor Stuck
Duct Restricted
Faulty Run Capacitor
Dampers Partially Closed
High Head Pressure
Evaporative Fan Running
Low Refrig Charge
Restricted Refrig Flow
Restricted Capillary
Defective TXV
Restricted Evaporator Air
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 Tronsformer
Thermostat Circuit Open
Faulty Control Relay
Overload Open
Low-Pressure Switch 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
For replacement items use Carrier specified parts.
Manufacturer reserves the right to change any product specifications without notice.
C A R R I E R A I R C O N D I T I O N I N G C O M P A N Y • S Y R A C U S E , N E W Y O R K
Tab 4
Form 38GC-15SI New
Printed in U.S.A.
2-71
Codes D and MS
Catalog No. 533-802
- 42S
- 30GT
- 48SS060
- 50ME
- 38AH024-034
- ZC
- 30GA
- COMFORTLINK 48A2
- 48HE003---006
- 33ZCSECTRM
- 19XRV
- MODU-PAC 50DF
- 17DA
- SINGLE PACKAGED ELECTRIC COOLING UNITS 50GS
- 48JZ (N) 024-060
- 30GX080-176
- 50DL
- 50GL-A
- NP034-074
- 40GXQ
- 30XA080-500
- 39E
- 40KMQ------301
- 38AE
- 48AW
- 38GXQ
- 48ES---A
- 48GL
- 48GH
- 40QA024-060
- TJF004
- 39LD
- 48DL
- 48/50TC04---28
- 50EJ
- 17EX
- 50BA
- 50BB
- 50BB
- 50BJ
- 30H
- 48HJD005-007
- 50ZP
- 50DP016
- 50LJ008-014
- OMNIZONE 50XJ064-104
- 48SX024-048
- 38APS025-065
- 48TM028
- 38BA
- 50LJ
- 07D
- SYSTEM PILOT 33PILOT-01
- 50HG014-028
- 38AUZ
- 50SS018-060
- 50ZH024-060
- 38CKC036 Air
- 51FP
- ROOMTOP 50AH024-096
- WEATHERMAKER 48/50AJ
- 38AF
- 38AK024-044
- 5F
- 50DF034
- WEATHERMASTER 36TE
- 09DK054-084
- 50ZPA
- 48/50PD05
- 40QNC
- MOTORMASTER 48/50P2
- 51CV/GY
- 52F
- 52F
- 38GNA
- 38AKS013-024
- 48TC*D08
- 38AE016
- SEER 48ES
- 50TJ016-028
- MINIMUM LOAD CONTROL ACCESSORY 30XA080-500
- 48/50A020-060
- 48KLA
- 48KLA
- 50GS
- 40RU
- 40RU
- 50PG03-07
- Compressor and Condensing Unit
- PREMIERLINK 33CSPREMLK
- 48/50PG C03-14
- 38GS
- PC 111
- 48EL
- 48PM16---28
- 48VL-A
- 48XL
- 50CD/CH
- 48FK
- OMNIZONE 50XCA06-24
- 48KH
- 00EFN900003000A
- 48DH
- 48GS(N)-2SB
- T--298
- 38ED
- 38TXA
- 38SE
- Packaged Terminal s & Heat Pumps 52P
- WEATHERMAKER 48AJ
- 50AH
- 06D
- WEATHERMAKER ZONEKIT2ZCAR
- 51QC/QG
- 48TC**16
- 30HR
- 50HJ004
- 38CQ
- 38CQ
- P
- 52C
- 50TC
- MODULINE 37HS
- 50EE
- 50MH
- 30HH
- 38EB
- 38AKS
- 38TRA
- 38CKW
- 39L
- 38CKC
- 50DP
- 040-420
- 38HDR018-060
- 38AKS028-044
- 48VT(N)
- 38GP
- 48/50P030-100
- 51CM
- 52C
- 38AH044-084
- 06E
- 50SX
- 50VL---A
- LIGHT COMMERCIAL CONDENSING UNITS 38HDL018-060
- 50DP020
- 38EC
- 50XP
- 48HJ004-014
- 38JB
- REFRIGERANT R-410A
- 42 SERIES
- 42GW
- 48N
- 48SS018-060
- 48TJF008-012
- 48HDT
- 38TMA
- 38QH
- 40RMQ008-028
- 09BB
- T-326
- 30GX080-265
- MINIMUM LOAD CONTROL ACCESSORY 30RB060-390
- 38HDL018-060
- 49004DP109
- 324423-751
- WEATHERMASTER 48/50Z030-105
- 48TM016-028
- 38CKB
- 09DK054-094
- 48TF004-007
- 38EN
- 38HD
- 38CKC(Q)
- 09DC
- 38VH
- 39E/ER
- 48ES
- RTU OPEN 11-808-427-01
- 38AU
- 07E
- 38GK
- 5H
- 5H
- 19DG
- 50AH024-060
- 42VMC
- 42XQ_42XQA
- 50HJ015
- 19 Series
- 1995 Room Air
- 73Y