58MVP
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Troubleshooting Guide
NOTE: Read the entire instruction manual before starting the installation.
SAFETY CONSIDERATIONS |
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INDEX |
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| PAGE |
Instructions | 1 |
Example | 2 |
Sequence of Operation | |
2 | |
Heating Mode | 2 |
Heating | 2 |
Emergency Heat Mode | |
Cooling Mode | 3 |
Heat Pump Mode | |
Continuous Fan Mode | 4 |
Component Test | |
Bypass Humidifier Mode | 5 |
Dehumidification Mode | 5 |
Zone Mode | 5 |
Start Here | 6 |
Service Label/Fault Code Instructions | |
Improper Operation With No Flashing Fault Code | 9 |
Not Enough Cooling Airflow | 10 |
11 | |
LEDs 1, 2, 3, or 4 On Solid | |
RED LED2 Flashing | 12 |
Fault Code 11ÐNo Fault in Recent History Display | 13 |
Fault Code 12ÐBlower Calibration Lockout | |
Fault Code 13ÐLimit Switch Lockout | |
Fault Code 14ÐIgnition Lockout | 17 |
Fault Code 21ÐInvalid Model Selection | 17 |
Fault Code 22ÐSet Up Error | 18 |
Fault Code 23ÐInvalid Blower Airflow Selection | 18 |
Fault Code 24ÐSecondary Voltage Fuse Is Open | |
Fault Code | |
Fault Code | |
Fault Code 33ÐLimit Switch Fault | |
Fault Code 34ÐIgnition Proving Fault | |
Fault Code 41ÐBlower Outside Valid Speed Range | |
Fault Code 42ÐInducer Outside Valid Speed Range | |
Fault Code 43ÐPressure Switch Calibration Fault | |
Fault Code 44ÐBlower Calibration Fault | 32 |
Cleanup and | 33 |
APPENDIX AÐBoard Layout & Wiring Schematic | |
APPENDIX BÐIsolation Circuits | 36 |
APPENDIX CÐPressure Check Diagram | 36 |
APPENDIX DÐQuick Motor Test Procedure | |
APPENDIX | |
and Blower Operation | |
APPENDIX FÐQuick Reference Information | 45 |
APPENDIX GÐThermostat Staging Algorithm |
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 microprocessor furnace control was designed with diagnostic capabilities built in. LEDs are used to flash a fault code which will lead you to 1 of the subsections as listed in the Index.
You should ALWAYS begin in the START HERE subsection (see Index for page number) which will guide you to the appropriate subsection where a minimal number of steps will be used to correct the problem. If you are very experienced at how this furnace operates and you suspect the problem is either the blower motor, inducer motor, or furnace control board, you can use the quick motor test procedure at the end of the troubleshooting guide to isolate the problem or direct you to appropriate section in main troubleshooting guide.
Once in a subsection, read the statement or question. A statement will have a number in the "GO TO" column. Do whatever the statement says, then proceed to step indicated in the "GO TO" column.
If the step is a question (a question will have a number in the "YES" or "NO" column), answer it "YES" or "NO." If the answer is "YES," go to step indicated in "YES" column. If the answer is "NO," go to step indicated in "NO" column.
Let's try our guide out using the EXAMPLE section below, and see how it works. Suppose that the problem is a defective
Additional Service Tools are available for current variable speed condensing furnaces. The Advanced Product Monitor Kit KGAFP0101APM includes a harness and diskette that allows communication with the control board through a personal com- puter
SEQUENCE OF OPERATION
Furnace control must be grounded for proper operation, or control will lock out. Control is grounded through green wire routed to gas valve and burner box screw.
Using schematic diagram (see Appendix A), follow sequence of operation through different modes. This furnace has a new control system. Read and follow wiring diagram carefully.
NOTE: If
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book | 1 | 4 | PC 101 | Catalog No. | Printed in U.S.A. | Form | Pg 1 | Replaces: | |
Tab | 6a | 8a |
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