To Next PageTo Next PageWhat to do if my Carrier 58CTY Furnace control auto-resets after failing to ignite gas 4 times?
If the Carrier Furnace control auto-resets after the system fails to ignite gas in 4 attempts, refer to the section that describes the flashed status code for further troubleshooting.
General| Model | 58CTY |
|---|---|
| Blower Type | Variable-Speed |
| Heating Capacity | 40, 000 to 120, 000 BTU/h |
| Fuel Type | Natural Gas or Propane |
| Warranty | 10-Year Parts Limited Warranty upon timely registration |
Major safety hazards related to furnace operation, installation, and maintenance.
Hazards that can lead to damage of unit components due to improper application.
Risk of personal injury from sharp edges on sheet metal parts during handling.
Specifies required clearances from combustible materials to ensure safe installation.
Lists applicable national and local codes and standards for furnace installation.
Precautions to prevent electronic control damage from static discharge.
General information regarding furnace placement and installation considerations.
Illustrates different furnace installation orientations (upflow, downflow, horizontal).
Hazards associated with contaminated air affecting furnace components and safety.
Hazards related to furnace installation location, such as in garages.
Hazards related to furnace installation and operation, including potential fires.
Hazards from improper use or installation causing premature component failure.
Guidelines for placing furnace relative to cooling coils to prevent condensation.
Hazards from contaminated air affecting heat exchangers and furnace life.
Hazards from negative pressure and insufficient make-up air for combustion.
Procedures for providing outdoor air for combustion and ventilation.
Using indoor air for combustion based on standards and infiltration rates.
Warning regarding insufficient air supply for combustion leading to safety risks.
Instructions for installing the furnace in an upflow configuration.
Steps to prepare for and install the bottom return air inlet.
Guidelines for connecting side return air inlets in specific configurations.
Instructions for installing leveling legs for furnace stability.
Instructions for installing the furnace in a downflow configuration.
Guidelines for installing the furnace in a horizontal orientation.
Methods for supporting a horizontally installed furnace using straps or rods.
Methods for supporting the furnace on a platform using blocks or bricks.
Measures to prevent flame roll-out and protect components.
Details for connecting the bottom return air inlet.
Details for connecting side return air inlets.
Warning regarding furnace operation without a filter or with the access door removed.
Standards for designing and sizing duct systems according to national standards.
Requirements for acoustical treatment of ductwork for noise reduction.
Guidelines for properly connecting supply air ducts to the furnace.
Connecting ducts for upflow and horizontal furnace configurations.
Connecting ducts for downflow furnace configurations.
Hazards associated with horizontal installation, including fire and explosion risks.
Methods for supporting a horizontally installed furnace using straps or rods.
Methods for supporting the furnace on a platform using blocks or bricks.
Details on return air setup for upflow furnaces, including restrictions.
Hazards related to improper return air duct connections to the furnace.
Return air connection requirements for downflow models.
Return air connection requirements for upflow and horizontal models.
Hazards associated with gas piping installation, testing, and leaks.
Hazards related to improper gas pipe connection, causing furnace damage.
Hazards from improper electrical connections or servicing, including shock and fire.
Hazards related to blower access door switch and wiring.
Requirements for proper electrical grounding to prevent shock and fire.
Caution regarding furnace control grounding for proper operation.
How to connect the furnace wiring to the junction box.
Hazards related to field-supplied disconnect mounting and wiring.
Warning about using aluminum wire for electrical connections.
Instructions for relocating the junction box for better access.
Instructions for installing power cords into the furnace junction box.
Instructions for installing BX cable into the furnace junction box.
Instructions for making 24-volt wiring connections to the control board.
Connecting an Electronic Air Cleaner to the furnace control.
Connecting a humidifier to the furnace control.
Hazards from improper venting procedures, including CO poisoning.
Codes and standards for venting installation, including common venting.
Warning about bypassing the draft safeguard switch.
Flowchart for inspecting chimney condition and suitability for furnace venting.
Requirements for venting through exterior masonry chimneys.
Steps to prevent condensation in the furnace and vent system.
Warning about hot vent pipes reaching children when installed in downflow.
Caution regarding sharp edges on sheet metal parts during venting installation.
Specifies minimum vertical vent heights for specific furnace orientations.
General procedures for furnace start-up, adjustment, and safety checks.
Warning about furnace controls, safety switches, and potential overheating.
Caution regarding sharp edges on parts during adjustment and checks.
Hazards during gas line purging and leak testing using open flames.
Hazards related to blower access door switch and manual operation.
Steps for initiating and performing component self-test for diagnostics.
Explains the functions of SW1 switches for various settings like status codes and delays.
Explains the functions of SW2 switches for airflow and twinning settings.
How to select airflow using SW2 settings for cooling and continuous fan modes.
Warning about improper gas valve regulator adjustment causing excess overfire.
Hazards from improper orifice drilling, causing noise or flame impingement.
Hazards from overheating or condensing flue gases not designed for.
Steps to adjust low and high fire manifold pressures for correct gas input.
How to determine and adjust temperature rise for optimal furnace performance.
Warning about improper gas valve regulator adjustment causing excess overfire.
Warning about overheating or condensing flue gases not designed for.
Warning about gas leaks from improper manifold plug installation.
Warning about reduced furnace life from improper temperature rise.
How to set the blower off delay time using DIP switches.
How to set the heat anticipator for mechanical thermostats.
Adjusting airflow for cooling modes based on unit size and settings.
Adjusting airflow for continuous fan or low-speed cooling.
Schematic showing electrical connections for furnace and accessories.
Explanation of symbols and abbreviations used in wiring diagrams.
Verifies operation of the main limit switch to prevent overheating.
Verifies operation of the draft safeguard switch for venting safety.
Verifies operation of pressure switches for inducer blower function.
Warning about performing maintenance without proper skills or equipment.
Caution regarding proper disposal of components and materials.
Warning about electrical safety during servicing, including lockout procedures.
Caution regarding wiring errors during servicing causing improper operation.
Explains upflow orientation and general procedures for furnace operation.
Hazards related to electrical safety, grounding, and polarity.
Steps to retrieve diagnostic status codes from the furnace control.
Steps to start the component self-test sequence for diagnostics.
Warning about blower access door switch when manually closing it.
Warnings for fire, electrical shock, CO poisoning during maintenance.
Procedures for cleaning or replacing the furnace air filter.
Caution regarding sharp edges on parts during filter replacement.
Warning about blower access door switch during motor maintenance.
Step-by-step instructions for cleaning the blower motor and wheel.
Warning about blower access door switch during rotation check.
Instructions for furnaces with vent pipe passing through the casing.
Steps for cleaning heat exchangers and associated parts if necessary.
Detailed steps for cleaning heat exchangers and associated parts.
Instructions for cleaning the hot surface igniter.
Hazards during gas line purging and leak testing using open flames.
Operation with a single-stage thermostat using adaptive heating logic.
Details on inducer prepurge, igniter warm-up, and trial-for-ignition sequences.
Process of proving flame presence and control actions taken.
Explains blower-on and blower-off delays for different heating modes.
Operation with a two-stage thermostat for precise heating control.
Cooling operation with single-speed AC and various thermostat types.
Cooling operation with two-speed AC and thermostat-controlled staging.
Cooling modes and airflow adjustments when using a Thermidistat.
Operation with the continuous blower fan engaged for air circulation.
How to adjust blower speed via thermostat for continuous fan operation.
How the furnace operates in conjunction with a heat pump system.
Steps for performing the component test for diagnostic purposes.
Schematic showing electrical connections for furnace and accessories.
How to use guides for diagnosing and isolating furnace problems.
Guide to diagnose system problems based on status codes and symptoms.
Details specific troubleshooting codes and their potential causes.
Lists parts categorized by their group (Casing, Electrical, Blower, etc.).
Information on how to order replacement parts from Carrier Corporation.
Explains how to identify the furnace model number for parts ordering.
