SERVICE
If status code recall is needed, do not remove power or blower door. Briefly remove and then reconnect one main limit wire to display stored status code.
LED CODE | STATUS |
CONTINUOUS OFF - Check for 115VAC at L1 and L2, and 24VAC at SEC1 and SEC2 . CONTINUOUS ON - Control has 24VAC power.
RAPID FLASHING - Line voltage (115VAC) polarity reversed. If twinned, refer to twinning kit instructions.
Each of the following status codes is a
11NO PREVIOUS CODE - Stored status codes are erased when power (115VAC or 24VAC) to control is interrupted or 48 hours after each fault is cleared.
12 BLOWER ON AFTER POWER UP (115VAC or 24VAC) - Blower runs for 90 seconds, if unit is powered up during a call for heat
13LIMIT OR FLAME
14IGNITION LOCKOUT - Control will
21GAS HEATING LOCKOUT - Control will NOT
Check for: -
22ABNORMAL
energized. Inducer will run until fault is cleared. Check for:
- Leaky gas valve | - |
23 PRESSURE SWITCH DID NOT OPEN | Check for: |
- Obstructed pressure tubing | - Pressure switch stuck closed. |
24SECONDARY VOLTAGE FUSE IS OPEN Check for: -
31
Check for: | - Refer to #32 |
32
five minutes, inducer shuts off for 15 minutes before retry. If it opens after trial for ignition period, blower will come on for 90 second recycle delay. Check for:
*- Defective blower motor or capacitor | - Restricted vent |
- Proper vent sizing | - Low inducer voltage (115VAC) |
- Disconnected or obstructed pressure tubing | - Excessive wind |
- Defective inducer motor | - Defective pressure switch |
- Inadequate combustion air supply | - Low propane inlet gas pressure |
33 LIMIT OR FLAME
- Dirty filter or restricted duct system. | - Loose blower wheel. |
- Defective blower motor or capacitor. | - Defective switch or connections. |
-Inadequate combustion air supply (Flame
-Open flame
34IGNITION PROVING FAILURE - Control will try three more times before lockout #14 occurs. If flamesignal is lost after trial for ignition period, blower will come on for
90 second recycle delay. Check for:
-Gas valve defective or gas valve turned off.
-Oxide buildup on flame sensor (clean with fine steel wool).
-Proper flame sense current (.5 microamps D.C. min., 4.0 - 6.0 nom. in HIGH HEAT).
-Green wire MUST be connected to furnace sheet metal.
- Flame sensor must be ungrounded. | - Manual valve |
- Defective hot surface ignitor | - Control ground continuity. |
- Inadequate flame carryover or rough ignition. | - Low inlet gas pressure. |
43
SWITCH OPEN WHILE | Check for: | ||
- Pressure switch stuck open | - Disconnected or obstructed pressure tubing | ||
- Refer to #32 and #33 | - Low propane inlet gas pressure | ||
45 REPLACE CONTROL |
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COMPONENT TEST |
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| TWIN | 12 - CIRCUIT |
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| TEST | |
W2 COM W/W1 Y/Y2 R G | HUM | LED | CONNECTOR |
24 V |
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To initiate the component
A01368
→ | Fig. |
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