When your furnace, boiler, heat pump, or air conditioner flashes a fault code or locks out, it’s telling you something is wrong — and ROMA Heating & Cooling diagnoses and repairs HVAC error codes for every major brand across Greater Vancouver. This is your starting point: find your equipment type and brand below, learn what’s safe to check yourself, and know when it’s time to call a licensed technician. ROMA Heating & Cooling has diagnosed HVAC fault codes across Greater Vancouver since 1999 — TSBC-licensed, fully insured, rated 4.8★ by 158+ customers.
No Heat or No Cooling? Get Priority Service
A fault code that keeps coming back means a real problem — don’t keep resetting it. ROMA Heating & Cooling provides priority emergency repair across Greater Vancouver, with licensed technicians who diagnose by the code, not by guesswork.
📞 Call now: (604) 704-0300 — describe the code, get straight answers.
📅 Book a repair · Emergency HVAC service · TSBC licensed since 1999.
What an Error Code Actually Tells You
Modern HVAC equipment uses a control board that constantly monitors safety and operating sensors. When a reading goes out of range — no flame detected, low water pressure, a blocked vent, an overheating coil — the board locks the system out and reports a fault code or LED flash pattern. The code identifies where the fault is; a technician confirms why and fixes it safely.
The One Rule That Saves You Money
Try one reset — then stop. A single power-cycle clears a one-time glitch. But if the code returns, repeated resets force the equipment to run against a real fault, which can destroy expensive components (igniters, control boards, heat exchangers, compressors). A returning code is a service call, not a reset loop.
Furnace Error Codes by Brand
- Lennox blinking codes · Lennox error codes & meanings
- Payne furnace error codes
- Goodman error codes · Amana furnace error codes
- York furnace error codes
- Heil · Comfortmaker · KeepRite
- Furnace control board error codes
Boiler Error Codes by Brand
- Navien boiler error codes · Navien hub
- Viessmann boiler error codes · Viessmann hub
- Vaillant boiler error codes
- Baxi boiler error codes
- Lochinvar boiler error codes
- NTI · IBC · Burnham · Weil-McLain
Heat Pump & Air Conditioner Error Codes by Brand
- Mitsubishi heat pump error codes (P1, P4, P6, E6…)
- Fujitsu error codes · LG CH error codes
- Daikin, Carrier, Bryant, Trane, Goodman and Rheem heat pump/AC codes — ask our technicians
Tankless & Water Heater Error Codes
When a Fault Code Is an Emergency
Call for priority service right away — and if you smell gas, leave first and call your gas utility — when you see: a gas smell, soot or scorching, a sounding carbon-monoxide alarm, water pouring from a boiler, repeated lockouts in freezing weather (no heat), or no cooling during a heat wave. ROMA provides emergency HVAC service throughout Vancouver, Burnaby, Richmond, Surrey, Coquitlam, Port Coquitlam, Port Moody, New Westminster, North Vancouver, West Vancouver, Delta, Langley, Maple Ridge, Pitt Meadows, White Rock, Abbotsford, and Chilliwack.
- Why does my furnace/boiler keep showing the same error code?
- A returning code means the underlying fault is still present — the board re-detects it and locks out again to protect the equipment. Resetting repeatedly doesn’t fix it and can cause expensive damage. Note the code and book a diagnostic.
- Is it safe to reset my HVAC system when it shows a code?
- One reset is reasonable for a possible one-time glitch. If the code returns, stop resetting — especially on gas equipment, where repeated lockout overrides can create real safety risks. Call a licensed technician.
- Can ROMA diagnose any brand’s error code?
- Yes — our technicians diagnose furnace, boiler, heat pump, AC, and water heater codes for every major brand against the manufacturer’s documentation. Describe the code when you call (604) 704-0300 and we’ll arrive prepared.
- Do you offer emergency service for no-heat or no-cool fault codes?
- Yes — ROMA prioritizes no-heat and no-cooling emergencies across Greater Vancouver. See our emergency service page or call (604) 704-0300.
Related Services
More Brand Error-Code Guides
What Greater Vancouver Homeowners Say
“Nelson worked hard to get the NTI unit fixed. He was always polite, courteous and on time.”
“As always Nelson was super efficient. Showed up on time and was quick to work. I had a full maintenance done on the fireplaces and furnace. He was awesome. I won’t use anyone else.”
“Excellent service. Andy had a spare Carrier inducer with him which saved us time.”
“Was very prompt to respond to our issues. Technician was scheduled for the day following my initial call.”
“Very professional heating company. Price is reasonable, excellent work.”
“Highly recommend this company. It was a pleasure dealing with Shawn and Nelson.”
“Professional and courteous technicians with attention to detail and customer needs.”
“Always great, friendly service. Serviced the hot water on-demand system. Honest and informative. Thanks!”
“Speedy response time, honest, and professional service from start to finish.”
Why Greater Vancouver Trusts ROMA Heating & Cooling
ROMA Heating & Cooling has installed, repaired and maintained heating and cooling systems across Metro Vancouver since 1999. Our team are TSBC-licensed gas fitters (Gas LGA0202903) and Red Seal-trained technicians — licensed, bonded and insured — and we back every job with upfront, flat-rate pricing and a 100% satisfaction guarantee. We hold a 4.8★ rating from 221+ Google reviews.
- Authorized for 30+ brands (Lennox, Carrier, Viessmann, Navien, Rheem & more)
- Upfront flat-rate pricing — no overtime or hidden fees
- Free, no-obligation estimates on new installations
- Locally owned & operated in Burnaby, BC
No Hidden Fees
Our service rates are transparent and easy to understand. You approve upfront, flat-rate pricing before we start — so you never get a bill you didn’t expect.
Licensed & Bonded
ROMA is a TSBC-licensed gas contractor (Gas LGA0202903). Our technicians are bonded, insured and Red Seal-trained — qualified for any heating or cooling system.
Free Estimates
We offer free, no-obligation estimates on new installations — furnaces, boilers, heat pumps, air conditioners, tankless and hot-water tanks.