Carrier Series 100- Troubleshooting Guide

Carrier Series 100

Carrier Series 100– Troubleshooting Guide, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 8 – SERVICE/STATUS CODE INSTRUCTIONS
  • Page 9 – COMPONENT TEST
  • Page 16 – Status Code 13
  • Page 19 – Status Code 24
  • Page 21 – Status Code 25
  • Page 22 – Status Code 31
  • Page 24 – Status Code 32
  • Page 26 – Status Code 33
  • Page 28 – Status Code 34
  • Page 30 – Status Code 41
  • Page 32 – Status Code 42
  • Page 34 – Status Code 43; Status Code 45
  • Page 35 – CLEANUP AND START-UP INSTRUCTIONS
  • Page 37 – Fig. 2 – Wiring Schematic
  • Page 46 – SERVICE TRAINING; Packaged Service Training
Loading the manual

-

1-

Replaces: NEW

Form: 58MVC-01T

10-08

Variable

Speed,

Step-Modulating

Electronic

Condensing

Four-Way Multipoise Gas Furnace

Visit www.carrier.com

58MVC Series 100

TROUBLESHOOTING GUIDE

INDEX

PAGE

Safety Considerations................................................................................. 1
Instructions.................................................................................................. 1
Example ...................................................................................................... 2
General........................................................................................................ 2
Sequence of Operation ............................................................................... 2
Single-Stage Thermostat and Step-Modulating Heating

(Adaptive Mode)................................................................................ 2

Two-Stage Thermostat and Two-Stage Low/High Heating............. 4

Two-Stage Thermostat and Two-Stage Medium/High Heating ...... 4

Cooling

Mode .................................................................................... 5

Single-Speed

Cooling ........................................................................ 5

Single-Stage Thermostat and Two-Speed Cooling (Adaptive
Mode) ................................................................................................. 5

Two-Stage Thermostat and Two-Speed Cooling ............................. 5

Thermidistat Mode............................................................................. 6
Super-Dehumidify Mode................................................................... 6
Continuous-Blower Mode ................................................................. 6

Heat Pump Defrost............................................................................. 7

Component Test ................................................................................. 7
Service/Status Code Instructions ............................................................... 8
Start Here .................................................................................................. 10
Rapid Flashing AMBER LED ................................................................. 11
Improper Cooling Air Flow ..................................................................... 12
Medium And/Or High Heat Temperature Rise Too Low....................... 13
Status Code 11 - No Previous Code......................................................... 15
Status Code 12 - Blower On After Power Up ......................................... 15
Status Code 13 - Limit Circuit Lockout .................................................. 16
Status Code 14 - Ignition Lockout ........................................................... 17
Status Code 15 - Blower Motor Lockout................................................. 17
Status Code 21 - Gas Heating Lockout.................................................... 17
Status Code 22 - Abnormal Flame-Proving Signal ................................. 18
Status Code 23 - Pressure Switch Did Not Open .................................... 18
Status Code 24 - Secondary Voltage Fuse Is Open................................. 19
Status Code 25 - Model Selection or Setup Error ................................... 21
Status Code 31 - Medium-Heat Switch or HPSR Relay did not
Close

or

Reopen ............................................................................... 22

Status Code 32 - Low-Heat Pressure Switch Did Not Close or

Reopened.......................................................................................... 24

Status Code 33 - Limit Circuit Fault........................................................ 26
Status Code 34 - Ignition-Proving Fault .................................................. 28
Status Code 41 - Blower Motor Fault ...................................................... 30
Status Code 42 - Inducer Motor Fault ..................................................... 32
Status Code 43 - Low-Heat Pressure Switch Open While Medium-

Heat Pressure Switch Is Closed ....................................................... 34

Status Code 45 – Control Circuitry Lockout ........................................... 34
Cleanup and Start-Up Instructions........................................................... 35
APPENDIX A - Board Layout & Wiring Schematic ............................. 36
APPENDIX B - ECM Blower Motor Description & Operation ............ 38
APPENDIX C - Pressure Check Diagram .............................................. 40
APPENDIX D - Static Pressure Reading Location Diagrams................ 41

APPENDIX E - Quick Reference Information ....................................... 43
APPENDIX F - Furnace Staging Algorithm ........................................... 44

SAFETY CONSIDERATIONS

Installing and servicing heating equipment can be hazardous due to
gas and electrical components. Only trained and qualified personnel
should install, repair, or service heating equipment.

Untrained personnel can perform basic maintenance functions such as
cleaning coils, or cleaning and replacing filters. All other operations
should be performed by trained service personnel. When working on
heating equipment, observe precautions in literature, on tags, and on
labels attached to or shipped with the unit, and other safety
precautions that may apply.

Follow all safety codes. In the United States, follow all safety codes
including the National Fuel Gas Code (NFGC) NFPA 54-2006/ANSI
Z223.1-2006. In Canada, refer to the National Standard of Canada
Natural Gas and Propane Installation Codes (NSCNGPIC), CSA
B149.1-05.

Wear safety glasses and work gloves. Have a fire extinguisher
available during start-up, adjustment procedures, and service calls.

Recognize safety information. This is the safety-alert symbol .
When you see this symbol on the furnace and in instructions or
manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAUTION,
and NOTE. The words DANGER, WARNING, and CAUTION are
used with the safety-alert symbol. DANGER identifies the most
serious hazards which will result in severe personal injury or death.
WARNING signifies hazards which could result in personal injury or
death. CAUTION is used to identify unsafe practices which may
result in minor personal injury, or product and property damage.
NOTE is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.

INSTRUCTIONS

This guide uses your expertise and observations to lead you to the
trouble spot as efficiently as possible. This is only intended as a guide
and should not be used blindly. Your experience and expertise are of
high value when troubleshooting this unit. Do not disregard all of
your instincts.

The variable speed furnace control was designed with diagnostic
capabilities built in. A AMBER LED is used to flash a status code
which will lead you to one of the sections as listed in the Index.

!

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Summary

Page 8 - SERVICE/STATUS CODE INSTRUCTIONS

- 8 - SERVICE/STATUS CODE INSTRUCTIONS If status code recall is needed disconnect the “R” thermostat lead, reset power, and put setup switch “SW1-1” in the ON position. To clear the status code history put setup switch “SW1-1” in the ON position and jumper thermostat terminals “R”, “W/W1”, and “Y/Y2...

Page 9 - COMPONENT TEST

- 9 - 33 LIMIT CIRCUIT FAULT – Indicates the limit, or flame rollout is open or the furnace is operating in high-heat only mode due to 2 successive low or medium heat limit trips. Blower will run at medium heat airflow for 4 minutes or until open switch remakes whichever is longer. If open longer th...

Page 16 - Status Code 13

- 16 - STEP ACTION YES NO GO TO 21. Does the furnace abruptly shut down with no inducer post purge and then run blower motor BLWM for 90 seconds while AMBER LED status light flashes status code 12. 22 26 22. Disconnect BROWN wire to gas valve GV. 23 23. Does the furnace still abruptly shut down as d...

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