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Heil gas furnace showing code Heartbeat / slow rhythmic flash on the ICP/Heil integrated furnace control (SmartLight / 4-pin diagnostic LED)? The amber/green diagnostic LED pulsing like a heartbeat means the integrated furnace control has 24VAC power and is in normal standby with no current call for heat. This is the healthy idle state, not a fault. Here is what it means, what you can safely check, and when to call a licensed CANRO technician in a situation across Metro Vancouver.
What not to touch: beyond these checks, do not open the unit or touch the gas valve, wiring, control board or refrigerant lines. In BC, gas and HVAC repairs must be done by a licensed technician — both for your safety and to keep your manufacturer warranty valid.
Same-day diagnosis across Metro Vancouver. We carry common parts and quote up front.
📞 (604) 359-1081 Request a quoteA single fault code rarely means you need a new gas furnace. The deciding factors are the unit’s age, the cost of the failed component versus its efficiency, and whether it’s a recurring problem. Our technicians give you an honest diagnosis and a written repair-or-replace recommendation — never a scare-sell. Explore more gas furnace guides and services or browse all HVAC error codes we fix.
Applies to Heil ICP/Heil integrated furnace control (SmartLight / 4-pin diagnostic LED). Code behaviour can vary by model and control board — our technician confirms the exact cause against your unit before any repair.
CANRO Heating & Cooling — TSBC Class-A gas-fitting licence · Red Seal HVAC certified · WorkSafeBC and liability insured · 4.9★ from 85+ Google reviews · Serving Metro Vancouver since 1999.
See every HVAC error code we diagnose, or book Heil furnace repair across Metro Vancouver. No heat or cooling right now? Call CANRO at (604) 359-1081 for same-day and after-hours service.
“Canro does an amazing job! Super professional and skilled with everything—boilers, furnaces, and AC. Always a pleasure working with them!”
“Five stars for Canro. We needed a replacement of a 30-year-old boiler. A new high-efficiency unit was installed—clean, professional work.”
“I can’t speak highly enough about George, who was recommended for a boiler service call for my parents’ home. George is excellent.”
25+ years keeping Metro Vancouver homes comfortable. Honest advice, upfront pricing, work that lasts.