Bosch boilers display a fault code when something needs attention. This guide explains the common categories of Bosch fault so you understand what’s happening — but always confirm the exact code in your Bosch manual, and have gas, electrical or sealed-system faults handled by a TSBC-licensed technician. ROMA Heating & Cooling diagnoses and repairs Bosch boilers across Greater Vancouver.
Common Bosch fault categories
The exact code on your Bosch display maps to one of these families of faults:
- Ignition / flame-loss lockout — the boiler tried to fire but couldn’t establish or sense a stable flame (gas supply, igniter, or flame-sensing)
- Low water pressure — system pressure dropped below the safe range (often a leak or expansion-vessel issue)
- Sensor fault — a temperature sensor (NTC) is reading out of range
- Fan / air-pressure fault — airflow isn’t being confirmed
- Overheat / thermostat trip — a safety device shut the boiler down
- Communication / PCB fault — a control-board or wiring problem
What to do when you see a fault code
Note the exact code, check your Bosch manual for its specific meaning, and on a lockout you can usually attempt a single reset. If it returns, stop — repeated resets on gas equipment can be unsafe — and call a licensed technician.
Important safety note
If you ever smell gas or suspect carbon monoxide, leave the home and call your gas utility’s emergency line first. Never attempt gas, electrical or refrigerant repairs yourself — in BC these must be done by a licensed technician.
ROMA repairs Bosch boilers in Greater Vancouver
ROMA Heating & Cooling is a TSBC-licensed gas contractor (LGA0202903), bonded and insured, serving Metro Vancouver since 1999 with a 4.8-star rating from 158+ reviews, upfront flat-rate pricing and 0% financing (OAC). Call (604) 704-0300 for a fast diagnosis.
What Our Customers Say
“We had a 12-year-old Navien combi hot water heater and boiler that started to have error messages, E001. Roma arranged service and sorted it out.”
Rather have a licensed pro handle it? Fast, honest help across Greater Vancouver.Call (604) 704-0300Free Estimate— Alan Info, Google review (★★★★★)
“Roma Heating exceeded my expectations after they replaced my 23-year-old Laars II hydronic boiler.”
— Ed S, Google review (★★★★★)
Frequently Asked Questions
Can I reset my Bosch unit myself?
You can usually attempt one reset on a lockout. If the fault returns, stop and call a licensed technician — repeated resets can be unsafe.
What does a Bosch low-pressure or sensor fault mean?
It points to a specific subsystem (pressure, a sensor, ignition, etc.). The exact code in your manual narrows it down, and a technician confirms the cause with a diagnostic.
Do you repair all Bosch models?
Yes — ROMA services the Bosch boilers lineup across Greater Vancouver, diagnoses the fault, and quotes the repair up front.
How fast can you come out?
We offer flexible scheduling and prioritise no-heat / no-hot-water calls. Call (604) 704-0300.
Related Services
- Emergency Boiler Repair
- Boiler Not Heating
- Navien Boiler Repair
- Gas Boiler Troubleshooting
- Combi Boiler Error Code Repair
- Boiler Repair in Burnaby
Call ROMA Heating & Cooling Today
For fast, professional diagnosis and repair anywhere in Greater Vancouver, call (604) 704-0300 or email info@romaheating.ca. Same-day and after-hours service, gas-licensed and insured, serving the Lower Mainland since 1999.
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.
ROMA Heating & Cooling is a trusted HVAC contractor serving Metro Vancouver since 1999. We specialize in furnace repair, heat pump installation, boiler services, air conditioning, and emergency heating solutions for residential, commercial, and government clients. Available 24/7, our certified technicians deliver fast, reliable, and affordable HVAC services across Greater Vancouver.