HRV Error Codes Guide
Decode your HRV error message. What it means, what you can check, and when to call for professional service in Greater Vancouver.
Call 778-909-5731Error codes vary by brand and model
The information below covers common codes. For exact diagnosis, check your owner's manual or call us with your specific model number.
Common HRV Error Types (All Brands)
What it means:
System detects reduced airflow, usually caused by clogged filters or blocked vents.
What to check:
- • Remove and inspect all filters
- • Clean or replace if dirty
- • Check exterior vents not blocked
- • Verify interior vents are open
What it means:
Temperature sensor failed or reading is outside normal range.
What to check:
- • Check if outdoor temp is extremely cold (below -25°C)
- • Verify exterior vents not blocked by snow/ice
- • Try resetting unit (power off/on)
What it means:
System detects fan motor issue or fan not reaching target RPM.
What to check:
- • Check filters (restriction causes motor strain)
- • Listen for unusual motor noises
- • Verify unit has proper power supply
What it means:
System entered defrost mode or detected potential freeze condition.
What to check:
- • Verify airflow is balanced (equal in/out)
- • Check for ice buildup in unit
- • Clear any snow from exterior vents
Common Error Codes by Brand
Select your HRV brand to see common error codes:
Error 1 or F1: Filter Alert
Filters need cleaning or replacement. Check and clean/replace all filters.
Homeowner can fixError 2 or F2: Airflow Restriction
Severe airflow restriction detected. Check filters, ducts, and vents. May need professional duct inspection.
May need professional serviceError 3 or F3: Temperature Sensor
Temperature sensor malfunction. Try reset. If persists, sensor needs replacement.
Requires professional serviceE1: Outdoor Air Sensor
Outdoor temperature sensor fault. Check exterior vents not blocked. Reset unit.
Likely needs sensor replacementE2: Supply Air Sensor
Supply air sensor malfunction. Check airflow not restricted.
Requires professional diagnosisFilter Icon: Maintenance Required
Time for filter cleaning and maintenance. Clean filters and reset timer.
Homeowner can fixFlashing Filter Light
Filter maintenance reminder. Clean or replace filters, then press reset button for 5 seconds.
Homeowner can fixRed Alert Light Solid
System fault detected. Check breaker, filters, and exterior vents. If light stays on, call for service.
Requires professional diagnosisNo Lights / Display Blank
No power to unit. Check circuit breaker and wall switch. May be control board failure.
Check power, then call if neededService Light Flashing
Maintenance interval reached. Perform filter cleaning and general maintenance.
Maintenance reminder onlyFault Light On
System detected fault condition. Check filters first, then contact service technician for diagnosis.
Requires professional serviceDon't see your error code or brand?
We service all HRV brands including Panasonic, Honeywell, Renewaire, and more. Call us with your model number and error code for accurate diagnosis.
Call for DiagnosisError Code FAQs
Write down the exact code, check this page for explanation, try any suggested homeowner fixes (like checking filters), and call us if the error persists or indicates a serious problem requiring professional service.
Some codes clear automatically once the problem is fixed. You can try turning the unit off at the breaker for 30 seconds then back on. However, this only resets the display - it does not fix the underlying problem.
No. Each manufacturer uses different code systems. A "3" error on Lifebreath means something completely different than a "3" error on Venmar. Always check your owner manual or call us for accurate diagnosis.
This page covers common codes, but there are many model-specific errors. Call us at 778-909-5731 with your exact model number and error code. We have technical manuals for all major brands.
Need Help With Your HRV Error Code?
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