Question about Aprilaire 600 Humidifier
The system is installed in automatic mode and operates in "test mode" but will not operate out of "test mode".
Outside temperature is 35-40 degrees and the resistance of the temp. sensor at the humidistadt measures ~27 k Ohm (corresponds to the suggested impedance for this temp.). The humidifier is installed in the supply plenum and the humidistadt is located about 5 feet (farther form furnace) away from the humidifier.
On a side note, I used the manual mode resistor with similar results.
Thank you, got my problem fixed, after spend $275.00 call the service man to come. it come up to all about wrong wiring.all working and happy:) now.
Posted on Jan 05, 2008
Well I fixed my problem. It was my fault. I was using installation instructions that I printed from the web, they were for a model 600. The model 600A has a different control and wiring. The model 600 required only one 24V power supply to the R & C terminals. I ran the furnace accesssory power (110v) to the supplied transformer and then to the R & C as required by the model 600. But on the 600A this must be run to the W/G & Cf pair and a seperate continuously powered 24V must be connected to the R&C pair. I bought another transformer, wired everything using the correct diagram and it works great. BTW the E3 code indicates an open circuit on the temperature sensor. Maybe you clipped the wire while stapling it to the joists. Good luck.
Posted on Dec 29, 2007
Call Aprilaire and tell them, this is happining everywhere
Posted on Dec 12, 2007
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