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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
Use a multimeter to measure the Ohms (resistance) across the leads and compare the reading to the standard York NTC thermistor temperature-resistance chart for the ambient oil temperature
preventing flame lifting or grounding issues that trigger safety shutdowns
This specific model is built for high-demand residential or light commercial applications
an "OL" or high-resistance reading indicates a hairline crack
and 48HCDD085A
Fenwal 35-605954-105 Module 321894-709 Use a multimeter to measureFor veteran technicians servicing high efficiency heating systems, the Fenwal 35 605954 105 stands as a critical 24 VAC microprocessor based direct spark ignition (DSI) control. This robust ignition module is engineered to manage the sequence of operation for gas fired appliances with precision, featuring a dedicated 15 second pre purge period and a 10 second trial for ignition (TFI) to ensure safe combustion cycles. Designed for versatility across
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