{"id":4616,"date":"2026-09-11T11:30:00","date_gmt":"2026-09-11T02:00:00","guid":{"rendered":"https:\/\/www.26yc.com\/?p=4616"},"modified":"2026-10-08T23:36:09","modified_gmt":"2026-10-09T06:36:09","slug":"energy-recovery-wheel-troubleshooting","status":"publish","type":"post","link":"https:\/\/www.26yc.com\/fr\/energy-recovery-wheel-troubleshooting\/","title":{"rendered":"D\u00e9pannage de la roue de r\u00e9cup\u00e9ration : pannes courantes et correctifs"},"content":{"rendered":"

Low effectiveness<\/h2>\n

temp\u00e9rature c\u00f4t\u00e9 \u00e9chappement tombant sous le point de cong\u00e9lation.<\/strong> roue ne tournant pas (d\u00e9faillance moteur ou courroie), ou condensat\/encrassement bloquant la matrice.
Correction :<\/strong> v\u00e9rifiez la rotation et la vitesse ; lavez la roue \u00e0 l'eau basse pression et un d\u00e9tergent doux ; confirmez la tension de la courroie.<\/p>\n

Frost or ice buildup (cold climates)<\/h2>\n

temp\u00e9rature c\u00f4t\u00e9 \u00e9chappement tombant sous le point de cong\u00e9lation.<\/strong> activez le secteur de purge, r\u00e9duisez la vitesse, ou ajoutez un pr\u00e9chauffage. Voir
Correction :<\/strong> m\u00e9thodes de protection anti-givre joints us\u00e9s ou purge mal align\u00e9e.<\/a>.<\/p>\n

Air leakage \/ carryover<\/h2>\n

temp\u00e9rature c\u00f4t\u00e9 \u00e9chappement tombant sous le point de cong\u00e9lation.<\/strong> remplacez les bandes d'\u00e9tanch\u00e9it\u00e9 ; v\u00e9rifiez la g\u00e9om\u00e9trie du secteur de purge ; confirmez l'\u00e9quilibre de pression alimentation\/\u00e9chappement.
Correction :<\/strong> roue voil\u00e9e, usure de roulement, ou d\u00e9bris.<\/p>\n

Unusual noise or vibration<\/h2>\n

temp\u00e9rature c\u00f4t\u00e9 \u00e9chappement tombant sous le point de cong\u00e9lation.<\/strong> r\u00e9\u00e9quilibrez ou remplacez la roue ; entretenez les roulements.
Correction :<\/strong> transfert excessif dans un espace avec sources d'odeur.<\/p>\n

Odors crossing streams<\/h2>\n

temp\u00e9rature c\u00f4t\u00e9 \u00e9chappement tombant sous le point de cong\u00e9lation.<\/strong> augmentez la purge, ou passez \u00e0 un
Correction :<\/strong> augmentez la purge, ou passez \u00e0 un \u00e9changeur \u00e0 plaques<\/a> o\u00f9 la s\u00e9paration est absolue.<\/p>\n

Maintenance rhythm<\/h2>\n

A semi-annual inspection – rotation check, seal inspection, and a clean if pressure drop has risen >15% – prevents most failures. Track efficacit\u00e9 et perte de charge<\/a> \u00e0 chaque service pour d\u00e9tecter la d\u00e9rive t\u00f4t.<\/p>\n

Commissioning and baseline checks<\/h2>\n

Most wheel faults surface only after a baseline is established. During commissioning, record the supply and exhaust temperatures, the wheel speed, and the pressure drop across both sides at design airflow. These figures become the reference against which later drift is judged. A wheel that tests well on day one but loses several percentage points of effectiveness within a season usually signals fouling or seal wear rather than a design error.<\/p>\n

Building management system alarms<\/h2>\n

Where the wheel is controlled by a building management system, set alarms on the metrics that fail first: a rising pressure drop points to fouling, a falling exhaust temperature points to reduced rotation or matrix blockage, and erratic current draw on the drive motor points to belt or bearing issues. Trending these values weekly catches problems weeks before occupant comfort is affected.<\/p>\n

Seasonal operation notes<\/h2>\n

In shoulder seasons the enthalpy difference between streams is small, so faults are easy to miss. Use the high-load heating and cooling months as your verification window. Also confirm that any summer bypass damper seats fully, since a leaking bypass short-circuits recovery and mimics a failed wheel.<\/p>\n

Questions fr\u00e9quemment pos\u00e9es<\/h2>\n

How often should an energy recovery wheel be inspected?<\/strong>
A semi-annual inspection is recommended, with rotation and seal checks and a clean when pressure drop rises above about 15 percent. In dirty or humid environments inspect more often.<\/p>\n

Can a fouled wheel be cleaned in place?<\/strong>
Yes. Wash the matrix with low-pressure water and a mild detergent, and let it dry fully before restart. Avoid high pressure that could deform the matrix.<\/p>\n

Why does my wheel frost up in winter?<\/strong>
The exhaust-side temperature can fall below freezing. Enable the purge sector, reduce wheel speed, or add preheat, and confirm a proper defrost cycle is configured.<\/p>\n

How can I tell if leakage is wasting energy?<\/strong>
Check the supply and exhaust pressure balance and the seal strips. Worn seals raise carryover; verify with a pressure differential test and, where needed, a tracer check.<\/p>\n

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