Carrier 38MVC, 38MVQ, 40MVC, 40MVQ CHART 11 -- OUTDOOR MOTOR

CHART 11 -- OUTDOOR MOTOR

Trace connections from

OD board. Connections

ok?

Motor ok.

Fix connection

Yes

Replace capacitors

Yes

Replace motor

Check capacitor.

Capacitor ok?

Check motor windings.

Ok?

Visually confirm that fan

blades and outdoor coil

are not blocked.

Clear blockage

Yes

Trace connections from

OD board. Connections

ok?

Motor ok.

Fix connection

Yes

Replace capacitors

Yes

Replace motor

Check capacitor.

Capacitor ok?

Check motor windings.

Ok?

Visually confirm that fan

blades and outdoor coil

are not blocked.

Clear blockage

Yes

A08172

38/40MVC, MVQ

Contents

Main Service Manual SAFETY CONSIDERATIONS !WARNING INTRODUCTION MODEL NUMBER NOMENCLATURE OUTDOOR UNIT INDOOR UNIT SERIAL NUMBER NOMENCLATURE STANDARD FEATURES AND ACCESSORIES INDOOR UNITS 38/40MVC, MVQ OUTDOOR UNITS LOW AMBIENT KIT CRANKCASE HEATER SPECIFICATIONS -- COOLING ONLY UNITS 38/40MVC, MVQ SPECIFICATIONS -- HEAT PUMP UNITS DIMENSIONS -- INDOOR DIMENSIONS -- OUTDOOR H W L1 CLEARANCES -- INDOOR CLEARANCES -- OUTDOOR SYSTEM OPERATING ENVELOPE 38/40MVC, MVQ 53MVC/MVQ System Operating Envelope Chart Cooling Continuous Operation Heating Continuous Operation CONNECTION DIAGRAMS Page Page Page Page Page Page Page REFRIGERATION CYCLE DIAGRAM REFRIGERANT LINES SYSTEM EVACUATION AND CHARGING CAUTION t ! SYSTEM VACUUM AND CHARGE Outdoor Unit Indoor Uni CONTROL SYSTEM SYSTEM SAFETIES 3MINUTETIMEDELAY COMPRESSOR OVERCURRENT PROTECTION S S S S SEQUENCE OF OPERATION Interface MODES OF OPERATION Page Page TROUBLESHOOTING DIAGNOSTIC HIERARCHY CHART 1 -- INDOOR FAN SPEED OUT OF CONTROL CHART 2 -- TEMPERATURE SENSOR CHART 3 -- COMPRESSOR OVERCURRENT PROTECTION CHART 4 -- INDOOR UNIT COMMUNICATION ERROR SIZE 9K AND 12K CHART 5 -- OUTDOOR UNIT PROTECTS * CHART 6 -- INDOOR UNIT COMMUNICATION ERROR SIZE 18K AND 24K CHART 7 -- UNIT NOT RUNNING, NO DIAGNOSTIC CODE CHART 8 -- UNIT NOT RUNNING OPTIMALLY CHART 9 -- UNIT NOT RUNNING OPTIMALLY (HP IN HEATING)* CHART 10 -- COMPRESSOR CHART 11 -- OUTDOOR MOTOR CHART 12 -- REVERSING VALVE CHART 13 -- RECEIVER BOARD APPENDIX 38/40MVC, MVQ A 1 -- 5 3 M V C 0 0 9 -- -- -- 1 / 5 3 M V C 0 1 2 -- -- -- 1 A 2 -- 5 3 M V Q 0 0 9 -- -- -- 1 / 5 3 M V Q 0 1 2 -- -- -- 1 A 3 -- 5 3 M V C 0 1 2 -- -- -- 3 38/40MVC, MVQ A 4 -- 5 3 M V Q 0 1 2 -- -- -- 3 A 5 -- 5 3 M V C 0 1 8 -- -- -- 3 A6 -- Characteristics of Temperature Sensor A7 -- Fuse Chart A8 -- Indoor Unit Diagnostic Guides 9K & 12K Units 18K & 24K Units Fig. 34 LED Display Panel