Carrier Understanding Blower Motor Fault Code 41 and Its Solutions
Page 27

41.

Make sure perforated disks are in combustion-air vent inlet.

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42

42.

Check pressure tubing going to gas valve air pressure fitting for kinks.

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43

43.

Remove gas valve air pressure fitting and check gas valve for blockage.

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44

44.

Ensure vent and combustion-air pipes are not reversed.

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45

45.

Check burner orifice size and alignment.

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46

46.

Add restriction to combustion-air pipe or lengthen it a few feet if possible.

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12

47.

Jumper R and W2 thermostat terminals on furnace control board.

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48

48.

Do you have combustion oscillations in high fire?

41

12

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Fault Code 41

BLOWER OUTSIDE VALID SPEED RANGEÐThis fault indicates 1 of the following:

·Blower motor speed cannot be maintained within 10% of calculated speed over a 30-sec period.

·Blower motor speed is less than 250 RPM or greater than 1300 RPM for more than 10 sec.

STEP

ACTION

YES

NO

GO TO

1.

Turn power off, remove blower access panel, and disconnect R thermostat lead from furnace con-

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2

trol board.

 

 

 

 

2.

Turn power on and depress door switch. Use a piece of tape to hold switch closed.

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3

3.

Jumper R and W/W1 thermostat terminals on furnace control board.

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4

4.

Observe operation of furnace for next 8 minutes or until fault occurs.

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5

5.

Does Fault Code 44 flash twice followed by Fault Code 41?

6

7

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6.

After about 10 minutes of operation, furnace will lock out and flash Fault Code 12. Go to page num-

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INDEX

ber indicated in Index for Fault Code 12.

 

 

 

 

7.

Does only Fault Code 41 flash?

11

8

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8.

Does a different fault occur?

9

25

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9.

Go to page number indicated in Index for fault code flashed.

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INDEX

10.

Go to page number indicated in Index for CLEANUP AND STARTUP INSTRUCTIONS.

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INDEX

11.

Does blower motor suddenly stop 10 sec before fault is signaled?

12

21

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12.

Turn power off and disconnect jumper wire across R and W/W1 thermostat terminals.

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13

13.

Put setup switch SW-4 labeled EMER. HEAT in ON position.

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14

14.

Turn power on and wait several sec, then jumper R and W/W1 thermostat terminals on furnace con-

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15

trol board.

 

 

 

 

15.

Check connectors PL3, PL10, PL11, PL12, PL13, B1, and B2.

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16

16.

Does motor operate intermittently in response to connectors and wires being moved?

17

18

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17.

Fix problem.

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10

18.

Does blower motor suddenly stop?

19

20

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→19.

Replace entire blower motor or blower control module attached to the blower motor. If you replace

 

 

 

the blower control module go to step 26. If problem still persists on an intermittent basis after re-

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INDEX

 

placing blower motor or blower control module, contact your distributor.

 

 

 

20.

Replace furnace control board.

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10

21.

Turn power off and disconnect jumper wire across R and W/W1 thermostat terminals.

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22

22.

Check connectors PL3, PL10, and PL13 for possible intermittent connection of ORANGE and VIO-

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23

LET wires.

 

 

 

 

 

 

 

 

 

27

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Contents Troubleshooting Guide Start Here Section ExampleÐCooling Mode ÐVariable Speed Furnace Control ÐWith DE Connection Lowed by the lowest number fault code. Example 13, 13 Service Status Code Example → ÐService Label/Fault Code InstructionsStep Action YES GO to ÐAir Conditioning A/C Airflow Setup Switch Position LEDs 1, 2, 3, or 4 on Solid Solid means on continuously Step Action YES GO to Fault Code Motor MTR2 →44 Page Lowed by the lowest number fault code. Example 14, 14 Fault Code ÐTwo-Speed AC/HP Airflow Requirements CFM ÐContinuous Fan CF Airflow Setup Switch PositionPage · LOW Heat Page →18 →40 Utes 14ÐIGNITION Lockout Ber indicated in Index for Fault Code →26 Turn power off Is inducer blower wheel okay? 55 ¬ Rpmrpm highlow ¬ →20 Index for Fault Code Cleanup and START-UP Instructions Board Layout and Schematic Appendix aControl Center Schematic Diagram Wiring SchematicIsolation Circuits Pressure Check DiagramAppendix B Appendix CAppendix D Quick Motor Test Procedure→33 →59 Example AIR Delivery Curve Ð Appendix EAir Delivery CurveÐ120-20 Air Delivery CurvesAir Delivery Curve Ð Air Delivery CurveÐ100-20Closet Ð Downflow Application Static Pressure Reading Location DiagramsBasement Ð Upflow Application Upflow Total Static Pressure Reading LocationsAttic Ð Horizontal Application Duct Static Check Sheet Quick Reference Information Appendix FThermostat Staging Algorithm Appendix GVariable Speed Condensing Furnace Algorithm Service Training
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58MVP specifications

The Carrier 58MVP is a high-efficiency gas furnace designed for optimal performance and energy savings. This model represents Carrier's commitment to innovative engineering and advanced technology, making it a preferred choice for homeowners seeking reliable heating solutions.

One of the standout features of the 58MVP is its impressive Annual Fuel Utilization Efficiency (AFUE) rating, which can reach up to 96 percent. This high AFUE rating indicates that the furnace uses less energy to produce heat, leading to lower utility bills and a reduced carbon footprint. The furnace is equipped with a two-stage gas valve that allows it to operate on a low setting during mild weather, providing increased efficiency and comfort.

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