Page 2 - Fig. 2—Model 58YAV Upflow Furnace
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PROCEDURE Electrostatic discharge can affect electronic components.Take precautions during furnace installation and servicing toprotect the furnace electronic control. Precautions will pre-vent electrostatic discharges from personnel and hand toolswhich are ...
Page 3 - Step 2—Blower Motor and Wheel; TABLE 1—SPEED SELECTOR
d. If equipped with permanent, washable filter, clean filter by spraying cold tap water through filter in opposite directionof airflow. Rinse filter and let dry. Oiling or coating of thefilter is not recommended. e. If equipped with factory-specified disposable media filter, replace only with media ...
Page 4 - Step 3—Cleaning Heat Exchanger; Fig. 3—Position of Ignitor to Burner; Fig. 4–Cleaning Heat Exchanger Cell
14. If furnace is operating properly, REMOVE TAPE TO RE- LEASE BLOWER ACCESS DOOR SWITCH, replaceblower access door. Step 3—Cleaning Heat Exchanger The following steps should be performed by a qualified servicetechnician: NOTE: If the heat exchangers get a heavy accumulation of soot and carbon, they...
Page 5 - Step 4—Electrical Controls and Wiring; Fig. 5–Heating and Cooling Application Wiring Diagram
10. Clean flame sensor with fine steel wool 11. Remove old sealant from center panel and collector box flange and apply new sealant to collector box flange and reinstall oncenter panel, making sure all 8 screws are secure. NOTE: A releasing agent such as PAM cooking spray or equiva- lent (must not c...
Page 6 - Fig. 6—Unit Wiring Diagram; PCB
Fig. 6—Unit Wiring Diagram A00304 PCB BLOWER OFF DELAY SELECTION CHART 90 SEC 135 SEC 180 SEC 225 SEC GVR HI/LO RELAY SEC-1 SEC-2 PL1 3 2 1 6 5 49 8 7 LED TEST/TWIN BLOWER OFF DELAY GRY WC HUM HSIR IDR BLWR BLOWER SPEED SELECT FU1 COOL HEAT L2 PL3 PL2 VAC 120 L1 PR1 1 2 123 PR2 24 VAC-3A FUSE SPARE-...
Page 7 - Fig. 7—Furnace Control; Com
through the sight glass or window on the blower access door. Thecontrol indicates status with the LED on continuously, rapidflashing, or a code composed of 2 digits. (The first digit is thenumber of short flashes, the second is the number of longs flashes.) For an explanation of status codes, refer ...
Page 8 - SERVICE; LED CODE; - Defective inducer motor; CONTINUOUS OFF - Check for 115VAC at L1 and L2, and 24VAC at SEC-1 and; to twinning kit instructions.
Fig. 8—Service Label A99233 SERVICE G R Y W Com HUM TES T LED LED CODE STATUS 24V 11 12 13 1421 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 power(115VAC or 24VAC) to control is interrupted or 48 hours after each fault is cleared.BLOWER O...
Page 9 - WIRING DIAGRAMS
Blower access door switch opens 115-v power to control. Nocomponent operation can occur. Caution must be taken whenmanually closing this switch for service purposes. Failure tofollow this warning could result in personal injury or death. d. BRIEFLY short (jumper) TEST, 3/16 in. quick connect termina...
Page 10 - Troubleshooting Guide
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 blinkingrapidly without a pause? Is there 115v going to switch? Replace door switch. Replace control center. Replace transformer. Is ...