When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Upgraded 780-783 Series Hot Surface Ignition (HSI) Control Module #HS780 Direct Replacement for Robertshaw HS780 34PL-308A & 780 Series Controls | 9-Spade Terminals | Gas-Fired Furnaces & Auto Lockout Buy With Confidence!
- ✓ FAST & FREE SHIPPING (Same or Next Business Day)
- ✓ FREE 30-DAY RETURNS
- ✓ BUILT-IN SAFETY LOCKOUT & FLAME DETECTION
- ✓ SHIPS FROM THE U.S.A.
Product Details
Restore reliable heat to your home or commercial space with this Nationwide (OE Style Upgraded Direct ReplacementHot Surface Ignition Control Module. Designed to directly replace the Robertshaw HS780 34PL-308A, this critical control board manages the entire ignition sequence of your gas-fired furnace or boiler.
If your furnace clicks but fails to glow, short-cycles, or locks out after a few seconds of runtime, a failing ignition module is often the culprit. This upgraded PCB is manufactured with flame-retardant casing and high-temperature-resistant solid-state components to withstand the harsh environment inside an HVAC cabinet. It features instantaneous flame sensing and automatic safety lockouts to protect your home from unburned gas accumulation.
Condition: Brand New in Box.
Package Includes: (1) HS780 34PL-308A Ignition Control Module. (You will receive the exact ignition board in the listing photos.)
💡 PRO HVAC TECHNICIAN TIP:
Before replacing your ignition module, always check your Flame Sensor and Hot Surface Igniter (HSI) first! A dirty flame sensor will cause a perfectly good module to lock out. Clean your flame sensor rod with fine steel wool (do not use sandpaper) and test your igniter's resistance with a multimeter. Always disconnect main breaker power before servicing HVAC electronics! Key Features
- Direct Fitment: Exact terminal layout and mounting footprint for Robertshaw HS780 34PL-308A control modules.
- Precision Sequence Control: Accurately times the igniter warm-up, gas valve opening, and flame proving cycle.
- Safety First: Advanced microprocessor immediately shuts down the gas valve (lockout mode) if a flame is not proven, preventing hazardous gas leaks.
- Durable Construction: Housed in a heavy-duty, heat-resistant polymer casing with anti-interference electronics.
Ignition Type: Hot Surface Ignition (HSI)
System Compatibility: Gas-Fired Furnaces & Boilers
Safety Features: Flame Rectification Sensor & Auto Lockout
Terminal Count: 9 Spade Terminals
Terminal Configuration Terminal ID Function Voltage Specs TH / TR / GND Thermostat & Transformer Ground 24 VAC Control VALVE Gas Valve Relay 24 VAC RS Remote Flame Sensor Microamp (µA) Signal L1/120 / L2NEU Main Power Line & Neutral 120 VAC IGN (x2) Hot Surface Igniter Output 120 VAC Specifications Terminal Count: 9 Spade Terminals Type: Hot Surface Ignition (HSI) Control Module Replaces OE Numbers: HS780 34PL-308A, Robertshaw 780 Series Input Voltage: 120/24 V.A.C. @ 60 Hz Max Load Current: 1.5A / 24 V.A.C. (Gas Valve) Igniter Load: 5A Resistive / 120 V.A.C. Shipping & Policies
- ✓ FREE SAME DAY / NEXT DAY SHIPPING
- • Fast dispatch to restore your heat as quickly as possible.
- ✓ FREE 30-DAY RETURNS
- • Uninstalled items in original condition may be returned within 30 days for a full refund.
- ✓ Money Back Guarantee
- • Buy with confidence. You are 100% protected.
Important Return Policy Note: Electrical components that show signs of short-circuiting, burned terminals from improper wiring, or physical damage from installation are not eligible for return. Ensure power is disconnected prior to installation.
International Buyers – Please Note:
Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility.
Questions? Please feel free to send a message. We reply quick!
robertshaw hs780 34pl-308a, robertshaw 780 series ignition control, gas furnace circuit board, hvac hot surface ignition module, furnace spark control board, 120v furnace igniter board, replacement furnace control panel, gas valve relay board, flame sensor control module, boiler ignition control, nationwide oe direct replacement, furnace lockout fix, hs780 ignition module, trane furnace board replacement, lennox ignition module, goodman ignition control, residential gas furnace parts.
