Carrier 58SB0B User Manual

58SB0B/58SB1B: Installation, Start–Up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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A230343
10.1 L1 POLARITY FAULT - Rapid flash LED.
Polarity of incoming 115V power is reversed.
Check for: - Correct line voltage (115V) wiring polarity at each
junction.
- If units are twinned, check for proper low-voltage
(24V) transformer phasing.
12.1 “W” ON at power up – Normal operation.
Blower runs for 90 seconds, if unit is powered
up during a call for heat (R-W closed) or when
(R-W opens) during the blower on-delay period.
13.1 LIMIT CIRCUIT LOCKOUT – Lockout occurs
If the limit, draft safeguard, flame rollout, or
blocked vent switch*(if used) is open longer
than 3 minutes. Control will auto-reset after
3 hours. See code 33.
21.1 GAS HEATING LOCKOUT - 24VAC sensed on
gas valve when shouldn’t be. Turn off power
and wait 5 minutes to retry.
Check for: - Stuck closed gas valve relay on control.
- Miswire or short on gas valve wire.
22.1 FALSE FLAME – Flame is proved while gas
valve is de-energized. Inducer will run until faut
is cleared.
Check for: - Stuck open or leaky gas valve.
23.1 STUCK MAIN pressure switch
Check for: - Obstructed pressure tube.
- Pressure switch stuck closed.
31.1 OPEN MAIN PRESSURE SWITCH - If open longer than
5 minutes, inducer shuts off for 15 minutes before retry.
If opens during blower on-delay period, blower will come
on for the selected blower off-delay.
Check for: - Proper vent sizing
- Low inducer voltage (115V).
- Low inlet gas pressure (if LGPS used)
- Inadequate combustion air supply - Disconnected or obstructed pressure tubing - Defective inducer motor - Defective pressure switch
- Excessive wind - Restricted
33.1 A SWITCH HAS OPENED IN THE MAIN LIMIT –
Indicates the limit, draft safeguard, flame rollout, or
blocked vent shutoff switch* (if used) is open. Blower will
run for 4 minutes or until open switch remakes whichever
is longer. If open longer than 3 minutes, code changes
to lockout #13. If open less than 3 min. status code #33
continues to flash until blower shuts off. Flame rollout
switch and BVSS requires manual reset.
Check for: - Dirty filter or restricted duct system
- Loose blower wheel - Defective switch or connections - Defective blower motor or capacitor
- Inadequate combustion air supply (flame rollout switch open)
- Restricted vent
- Proper vent sizing - Excessive wind
45.1 CONTROL FAILURE – flame circuit
fault, memory mismatch or sequence
error.
45.2 CONTROL FAILURE – gas valve relay
will not close.
45.3 CONTROL FAILURE – EEPROM
memory issue.
For code 45, cycle power, if code 45 repeats,
replace control.
Only the MAJOR flash code is seen through the sight glass on door.
* Blocked vent shutoff switch used in Chimney Adapter Kit
46.1 MOMENTARY LOSS of power –
Heating operation will stop and will
restart once the power fluctuation is
resolved.
14.1 IGNITION LOCKOUT – System failed to ignite
gas and prove flame in 4 attempts. Control will
auto-reset after 3 hours. See status code 34.1.
14.2 FLAME LOST LOCKOUT – Flame signal was
lost 3 times after heating blower on delay.
Control will auto-reset after 3 hours. See status
code 34.3.
14.3 FLAME LOST LOCKOUT – Flame signal was
lost 7 times during a single heat request. See
status code 34.2 to 34.3.
Check for (applies to all):
- Correct manifold pressure and gas firing rate
- Gas inlet pressure fluctuations
- See Code 34 for additional help

Carrier 58SB0B Specifications

General

Model	58SB0B
AFUE	80%
Ignition Type	Hot Surface Ignition
Stages of Heating	Single Stage
Fuel Type	Gas
Heating Capacity	40, 000 - 120, 000 BTU/h
Input BTU	40, 000 - 120, 000 BTU/h