Bryant 393AAV manual

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Table of contents for the manual

  • Page 1

    NOTE: Read the entire instruction manual before starting the installation. TABLE OF CONTENTS SAFETY CONSIDERATIONS .....................................................1 INTRODUCTION ..........................................................................2 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PRO- CEDURE .....................................[...]

  • Page 2

    CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. INTRODUCTION These instructions are written for the Gas-Fired Induced Combus- tion Furnace. ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PROCEDURE CAUTION: Electrostatic discharge can affect electronic components. Take pre[...]

  • Page 3

    b. Remove filter cabinet door. c. Slide filter out of cabinet. d. If equipped with permanent, washable filter, clean filter by spraying cold tap water through filter in opposite direction of airflow. Rinse filter and let dry. Oiling or coating of the filter is not recommended. e. If equipped with factory-specified disposable media filter, replace o[...]

  • Page 4

    WARNING: Blower access door switch opens 115-v power to control center. No component operation can occur. Caution must be taken when manually closing this switch for service purposes. Failure to follow this warn- ing could result in electrical shock, personal injury, or death. NOTE: If thermostat terminals are jumpered before blower ac- cess door s[...]

  • Page 5

    (5.) Repeat foregoing procedures until each cell in furnace has been cleaned. (6.) Using vacuum cleaner, remove residue from each cell. (7.) Using vacuum cleaner with soft brush attachment, clean burner assembly. (8.) Reinstall cell inlet plates and burner assembly. Care must be exercised to center burners in cell openings. 10. Clean flame sensor w[...]

  • Page 6

    The 24-v circuit contains an automotive-type, 3-amp fuse located on the control. (See Fig. 6.) Any shorts of the 24-v wiring during installation, service, or maintenance will cause this fuse to blow. If fuse replacement is required, use ONLY a 3-amp fuse. The control LED will display status code 24 when fuse needs to be replaced. With power to the [...]

  • Page 7

    Fig. 7—Unit Wiring Diagram A00304 PCB BLOWER OFF DELAY SELECTION CHART 90 SEC 135 SEC 180 SEC 225 SEC GVR H I/L O RELA Y SEC-1 SEC-2 PL1 3 2 1 6 5 4 9 87 LED TEST/TWIN BLOWER OFF DELAY G R Y W C HUM HSI R I DR BL WR BLOWER SPEED SELECT FU1 COO L HEA T L2 PL3 PL2 VA C 120 L1 PR1 1 2 1 2 3 PR2 24 VAC -3A FUS E SP ARE-2 SP ARE-1 EAC-1 EAC-2 C 1. 5 A[...]

  • Page 8

    Fig. 8—Service Label A99233 SER VICE G R Y W Com HUM TEST LED LED CODE ST A TUS 24V 11 12 13 14 21 22 23 24 31 33 34 * 9 8 6 5 32 1 4 7 COMPONENT TEST NO PREVIOUS CODE - Stored status codes are erased when pow er (115V AC or 24V AC) to control is interrupted or 48 hours after each f ault is cleared. BLO WER ON AFTER PO WER UP (115V A C or 24 V A [...]

  • Page 9

    4. If furnace is operating properly and LED indicates proper operation, replace control access door. 5. Component Test can also be initiated by performing the following: a. Remove control access door. b. Remove blower access door. c. Manually close blower access door switch. WARNING: Blower access door switch opens 115-v power to control. No compon[...]

  • Page 10

    Troubleshooting Guide A99123a Is circuit breaker closed? Close door switch and go to start. Is red LED status light on? Is door switch closed? Is red LED status light blinking rapidly without a pause? Is there 1 15v going to switch? Replace door switch. Replace control center . Replace transformer . Is red LED status light blinking ON/OFF slowly wi[...]

  • Page 11

    A99123b 11 NO PREVIOUS F A UL T - Faults are erased after 48 hrs or whenever power (1 15v or 24v) is interrupted. Run system through a heating or cooling cycle to check system. 12 BLO WER ON AFTER PO WER UP (115V OR 24V) - Normal operation. Blower will run for 90 sec when furnace power is interrupted during a call for heat, R-W closed. 13 LIMIT OR [...]

  • Page 12

    A94328 SERVICE TRAINING Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual, including: • Unit Familiarization • Maintenance • Installation Overview • Operating Sequence A large selection of product, theory, and skills programs is available, using popular video-based f[...]