Ducted Heating
LED#1-Alternating Fast Flash, LED#2-Alternating Fast Flash means different things on different Ducted Heating models. Enter your model number to see only your reading, or find your model below.
Models: G24M
Possible cause: 1.5.1 Improper ground to the unit. Corresponding action/comments: ACTION 1 − Check that the unit is properly ground. ACTION 2 − Install a proper main ground to the unit Possible cause: 1.5.2 6−Pin connector is improperly at- tached to the circuit board. Corresponding action/comments: ACTION 1 − Check 6−pin connector for proper installation. Correctly insert connector into con- trol. Possible cause: 1.5.3 Line voltage is below 75V. Corresponding action/comments: ACTION 1 − Check that the line voltage is above 75V. Determine cause of voltage drop and sup- ply correct voltage to the control.
1.5 − On initial power−up the combustion air blower remains energgized. − DDiiagnosttiic lliighhtts ffllashh tthhe iimproper main ground. LED#1−Alternating Fast Flash LED#2−Alternating Fast Flash
Models: G24M
Possible cause: 2.1.1 Open ignitor circuit. Corresponding action/comments: ACTION 1 − Check for correct wiring and loose connections in the ignitor circuit. Check mult− plug connections for correct installation. Possible cause: 2.1.2 Broken or failed ignitor. Corresponding action/comments: ACTION 1 − Unplug ignitor and read resistance across ignitor. If resistance does not read be- tween 10.9 and 19.7 ohms, replace the ignitor.
2.1 − On initial power−up the combustion air blower remains energized. − Diagnostic lights flash the im prop- er main ground. − Combustion air blower cycles 55 seconds on 55 seconds off. LED#1−Alternating Fast Flash LED#2−Alternating Fast Flash
Continue in ACLogics with guided diagnosis for your equipment and symptoms.
