102
The following charts are efficient checking procedures for troubleshooting when these fan-coil units are
combined with condensing units with the unit standard wiring. For dual circuited models, perform the
procedures for each.
No Cooling
No Cooling ( Compresor Does Not Start )
No Voltage or Low Voltage
Unit Power
Supply
Evaporator
Fan Motor
Fuse For
Operation
Circuit
Single-Phase
Components Shorted
Connections Loose
Overcurrent
Relay For
Evaporator Fan
High Voltage or Low Voltage
Single-Phase
Evaporator Fan
Contactor
Coil Burnt
Contact Faulty
Get the Right Voltage
Repair the Power
Line
Repair or Replace The
Components
Tighten The Connections
Get The Right Voltage
Check The Power Supply To The
Motor : Repair When Necessary
Faulty Fan Motor
Defective Operation Switch
Change The Contactor
Repair The Contacts
Repair Or Change The
Motor
Repair Or Replace The Switch
Condenser
Fan Motor
Overcurrent
Relay For
Condenser Fan
Condenser Fan
Contactor
Compressor
Contactor
High Voltage or Low Voltage
Single-Phase
Coil Burnt
Contact Faulty
Fan Motor Faulty
Other Electrical Component
Faulty
Coil Burnt
Contact Faulty
Open Compressor Windings
Incorrect Wiring
Get The Right Voltage
Check The Power Supply To The
Motor : Repair Connections When
Necessary
Change The Contactor
Change The Contacts
Repair or Change The Motor
Repair or Change If
Necessary
Change The Contactor
Repair The Contacts
Change The Compressor
Correct The Wiring
Running
Stop
Tripped
Faulty
Faulty
Faulty
Tripped
Blown
Running
Faulty
Stop
: Faulty
: Check
: Cause
Remedy
Содержание MDB075B
Страница 1: ...MDB 2004 Ducted Split Systems Models MDB 075 750B MDB 125 150C MDB 075 500BR MDB 125CR...
Страница 38: ...37 Blower Performance Curves MDB 075B BLOWER PERFORMANCE CURVE...
Страница 39: ...38 MDB 100B BLOWER PERFORMANCE CURVE...
Страница 40: ...39 MDB 125B BLOWER PERFORMANCE CURVE...
Страница 41: ...40 MDB 125C BLOWER PERFORMANCE CURVE...
Страница 42: ...41 MDB 150B BLOWER PERFORMANCE CURVE...
Страница 43: ...42 MDB 150C BLOWER PERFORMANCE CURVE...
Страница 44: ...43 MDB 200B BLOWER PERFORMANCE CURVE...
Страница 45: ...44 MDB 250B BLOWER PERFORMANCE CURVE...
Страница 46: ...45 MDB 300B BLOWER PERFORMANCE CURVE L s...
Страница 47: ...46 MDB 350B BLOWER PERFORMANCE CURVE...
Страница 48: ...47 MDB 400B BLOWER PERFORMANCE CURVE...
Страница 49: ...48 MDB 450B BLOWER PERFORMANCE CURVE...
Страница 50: ...49 MDB 500B BLOWER PERFORMANCE CURVE...
Страница 51: ...50 MDB 600B BLOWER PERFORMANCE CURVE...
Страница 52: ...51 MDB 750B BLOWER PERFORMANCE CURVE...
Страница 53: ...52 Outlines And Dimensions Indoor MODEL MDB 075 100 B BR MODEL MDB 125C HORIZONTAL AIR DISCHARGE ONLY...
Страница 60: ...59 MODEL MMC 075C CR MODEL MMC 100C...
Страница 61: ...60 MODEL MMC 125BR 150C STANDARD VERTICAL DISCHARGE NON CONVERTIBLE...
Страница 69: ...68 MODEL INDOOR MDB 400B4 MDB 500B4 WITH SEQUENTIAL CONTROLLER OUTDOOR MMC 100B x 4 MMC 125B x 4...
Страница 70: ...69 MODEL INDOOR MDB 600B4 WITH SEQUENTIAL CONTROLLER OUTDOOR MMC 150C x 4...
Страница 71: ...70 MODEL INDOOR MDB 750B5 WITH MAGNETIC CONTACTOR OUTDOOR MMC 150C x 5 INDOOR AUXILLARY C1 C1...
Страница 72: ...71 Wiring Diagrams Heatpump INDOOR EXPORT MODEL MDB 075 100BR C3 0B MODEL MDB 125CR EXPORT...
Страница 73: ...72 MODEL MDB 150 200 250 BR2 EXPORT MODEL MDB 300 350 BR3 EXPORT...
Страница 74: ...73 MODEL MDB 400 500 BR4 EXPORT...
Страница 84: ...83 Refrigerant Circuit Diagram MODEL MMC 075C 100C...
Страница 85: ...84 MODEL MMC 075B 100B 125B 150C...
Страница 86: ...85 MODEL MMC 075CR WITH CAPILLARY TUBE EXPANSION SPECIFICATION...
Страница 87: ...86 MODEL MMC 100BR 125BR WITH CAPILLARY TUBE EXPANSION SPECIFICATION...
Страница 88: ...87 MODEL MMC 075CR WITH THERMAL EXPANSION VALVE SPECIFICATION...
Страница 89: ...88 MODEL MMC 100BR 125BR WITH THERMAL EXPANSION VALVE SPECIFICATION...
Страница 101: ...100 SEQUENTIAL CONTROLLER BLOCK DIAGRAM...
Страница 163: ...2004 McQuay International 1 800 432 1342 www mcquay com ISO 9002 REGISTERED...