Carrier 59TP6B User Manual

88
Is AMBER LED status light on?
Is there 24V at SEC-1 and SEC-2? Is there 115V at L1 and L2? Replace furnace control.
Is door switch closed? Replace transformer. Replace door switch. Is there 115V going to switch?
Is door switch closed? Is circuit breaker closed? Check for continuity in wire from circuit breaker to furnace. Close circuit breaker and go back to START.
Is AMBER LED status light blinking rapidly without a pause?
Check for correct line voltage polarity. If units are twinned, check for proper low- voltage (24V) transformer phasing.
Is AMBER LED status light blinking ON/OFF slowly with a combination of short and long flashes? Determine status code. The status code is a 2 digit number with the first digit determined by the number of short flashes and the second digit by the number of long flashes?
To recall previous status codes disconnect the R thermostat connection, reset power, and put setup switch SW1-1 in the ON position. The AMBER LED will flash the status codes in the order of occurrence. Record status codes until status code #11 flashes (1 short and 1 long flash). After status code #11 flashes the status codes will repeat. Status codes are erased after 72 hours or can be manually erased by putting setup switch SW1-1 in the ON position and jumpering R, W/W1, and Y/Y2 simultaneously until status code #11 is flashed. When done put setup switch SW1-1 in the OFF position. Was there a previous status code other than #11?
Go to section below for the status code that was flashed.
Does the control respond to W/W1, W2, Y1, Y/Y2, and G (24V) thermostat signals? Run system through a low-heat, high- heat, or cooling cycle to check operation. Status codes are erased after 72 hours or can be manually erased by putting setup switch SW1-1 in the ON position and jumpering R, W/W1, and Y/Y2 simultaneously until status code #11 is flashed.
Is 24V present at W/W1, W2, Y1, Y/Y2 or G thermostat terminals on the furnace control? Check room thermostat or interconnecting cable. Disconnect all the thermostat wires from the furnace control. Does the problem repeat when using a jumper wire?
Replace furnace control.
The thermostat is not compatible with the furnace control. Either install a ballast resistor, connect the Com24V thermostat terminal to the thermostat, or replace the thermostat.
YES NO
YES
YES
YES
YES
YES
SEYSEYSEY
YES
START
YES
YES
NO NO
NO
ONON
NO
ONON
NO
NO
NO
Troubleshootin
g
Guide
11 NO PREVIOUS CODE – Status codes are erased
after 72 hours or can be manually erased by putting setupswitchSW1-1intheONpositionandjumpering R, W/W1, and Y/Y2 simultaneously until status code #11 is flashed. Run system through a low-heat, high- heat, or cooling cycle to check system.
12 BLOWER ON AFTER POWER UP – (115V OR 24V)
– Normal operation. Blower runs for 90 seconds, if unit is powered up during a call for heat (R-W/W1 closed) or when (R-W/W1 opens) during the blower on-delay period.
13 LIMIT CIRCUIT LOCKOUT – Lockout occurs if the
limit or flame rollout switch is open longer than 3 minutes or 10 successive limit trips occurred during high-heat. Control will auto-reset after 3 hours. See code 33.
14 IGNITION LOCKOUT – System failed to ignite gas
and prove flame in 4 attempts. Control will auto-reset after 3 hours. See status code 34.
A113325A
Fig. 72 -- Troubleshooting Guide

Carrier 59TP6B Specifications

General

Stages	Two-stage
Blower Motor	Variable-speed
Energy Star Certified	Yes
Fuel Type	Natural gas
Heat Exchanger	Stainless Steel
Heating Capacity	40, 000 - 120, 000 BTUh
Warranty	10-year parts