CARRIER INFINITY 98 59MN7 Furnace Igniter Clicking
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
|
93%
CONF
|
Hot Surface Ignitor
The HSI is a ceramic resistive element that glows to ignite the gas-air mixture. Over time, the ceramic substrate develops hairline fractures due to extreme thermal cycling, which eventually creates an open electrical circuit. Because the ignitor cannot heat up, the control board's safety logic prevents the gas valve from remaining open, resulting in the repetitive relay clicking heard as the system retries the ignition sequence.
SKU: 332505-751
|
VIEW ON AMAZON
#CommissionsEarned
|
|
4%
CONF
|
Flame Sensor
If the furnace ignites momentarily then shuts down with a click, the flame sensor is likely coated in carbon or silica deposits. This prevents the 'flame rectification' signal from reaching the control board, causing the system to immediately close the gas valve for safety. Cleaning or replacing this rod restores the microamp signal to the controller.
|
VIEW ON AMAZON
#CommissionsEarned
|
|
3%
CONF
|
Integrated Furnace Control Board
The control board manages the timing and power distribution for the ignition sequence. If the internal relays responsible for the ignitor or the gas valve have suffered contact pitting or coil failure, they may produce a clicking sound without successfully passing current to the ignition components. This is typically a secondary failure mode if the ignitor itself tests within ohm specifications.
SKU: HK42FZ034
|
VIEW ON AMAZON
#CommissionsEarned
|
DIY Repair Guide
Watch exactly how to replace the Hot Surface Ignitor.
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.