Fenwal 35-655600-003 is a 24V hot surface ignition (HSI) control module that manages the ignition sequence and flame sensing for compatible gas-fired equipment. This model is a single-try ignition control with a 7-second trial-for-ignition (TFI) and built-in LED diagnostics.
Product Specifications:
Part Number (MPN): 35-655600-003
Type: Ignition Module / Ignition Control
Ignition Type: Hot Surface Ignition (HSI)
Control Input Voltage: 18–30 VAC, 50/60 Hz (Class 2 transformer)
Voltage (listing): 24V
Ignition Attempts: Single try
Pre-Purge / Inter-Purge: 0 sec / 0 sec
Gas Valve Output Rating: 2.0A max @ 24 VAC
Hot Surface Igniter Output Rating: 5.0A max (HSI output)
Flame Sensitivity: 0.7 µA minimum
Operating Temperature Range: -40°F to 176°F (-40°C to 80°C)
Diagnostics: LED indicator
Also Compatible With:
Fenwal 35-655600-003
(Gas furnaces, Boilers, Commercial cooking, Water heaters, and other gas-fired appliances)
What’s Included:
- 1 √ó Fenwal 35-655600-003 Ignition Module




