Fix e3 error on Aprilaire 500 whole house humidifier

How to quickly fix E3 error on Aprilaire 500 whole house humidifier.
1 - try simple reset
2 - check resistance
3 - check outdoor unit and wiring
4 - if wiring looks good and your getting zero resistance, then replace outdoor unit. ( 10 bucks)
5 - If you replace outdoor unit and still have issues you may need to run new wire to outdoor unit or need new control panel.
Resistor Table - You need this table along with the outdoor temperature to determine what OHMs you should be reading.
So if it's 30 degrees outside you sensor should be reading around 34.6 ohms.
Temperature Resistance
30 34.6
40 26.1
50 19.9
60 15.3
70 11.9
80 9.4
90 7.4
100 5.9
Link to Doc: www.homecontro...
Old Video where i fixed - • How to quickly fix E3 ...
The resistor can be bought here : shop.aprilaire...
New Humidifier can be bought here: amzn.to/3jWqd2j
Purchase Multi-meter Link: amzn.to/3mzFLuL
Aprilaire introduced the first evaporative humidifier for forced air furnace systems back in 1954. Since that time, Aprilaire continues to lead the industry in whole home humidification systems. Our evaporative humidifiers work by piping water into the distribution tray located at the top of the humidifier. The water is uniformly distributed across the width of the tray and through a scientifically designed system of outlets. It flows by gravity over the Water Panel evaporator. Dry, hot air from the HVAC system is moved through the moisture-laden Water Panel evaporator. Natural evaporation takes place, the water is turned to vapor, and the humidified air is circulated throughout your home. INCLUDED IN THE BOX: Installation instructions and template, humidifier with built-in bypass damper, 24 VAC transformer, automatic digital humidifier control with sensor, outdoor temperature sensor, saddle valve, solenoid valve, and Model # 10 Water Panel
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