Aprilaire

1 field manuals · 8 error codes · 1 guides

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DehumidifierFurnace

Aprilaire dehumidifiers

Manual · Dehumidifier

Whole-house ducted dehumidifier (Aprilaire / Santa Fe class): electrical and airflow field manual

Plug-in 120 V whole-house dehumidifiers installed in basements, crawlspaces or attics and ducted stand-alone or to the HVAC system. Detailed values come from Aprilaire's 1830/1850/1870 troubleshooting manual; Santa Fe units follow the same principles but have their own documents. Electrical and airflow side only; the refrigeration circuit is out of scope.

8 components6 common failuresAprilaire, Santa Fe

Error codes

E1 Internal humidity/temperature se…E2 High refrigeration pressure / te…E3 Wall control (Model 76) communic…E4 Insufficient capacityE5 / E6 Thermistor failure (high temp E5…E7 Float switch openE8 Inlet air out of rangeE9 Outdoor temperature sensor failure

Official Aprilaire manuals & support

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