The solenoid will not opened even after the reset/test button has been depressed for 5 seconds. We have examined the plastic plug on the outflow of the solenoid(it was not plugged). The water flow to the inlet side of the solenoid but no water has flown through yet.
The change water panel light is just a timer. it does not sense that the water panel actually needs to be replaced. sounds like you have a solenoid issue. if you have water to the solenoid and are certain you are getting 24v to it, the solenoid is ethier bad or plugged with calcium. most likely calcium. sometimes you can take them apart and clean them. so, it you can hear clicking at the solenoid when you turn the humidstat up and down. try cleaning it.
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The solenoid valve unit will work upside down however, I am concerned that the tech that installed the unit might have installed it backwards. Look on the side of the valve the solenoid is connected to and you should find an arrow. Thats the direction of the water flow.A strainer helps keep the valve clean however if there is dirt in the valve it would be stuck opened not closed. Make sure the solenoid is getting power via float valve. If the solenoid is getting power you can tell by touching the top of the solenoid with a metal non magnetic screw driver. It will pull the screw driver like a magnet. Good luck
Thank you for contacting us with regards to your model 600 Humidifier. The Change Water Panel indicator should flash when the control knob is set to the Test/Reset mode. The flashing indicates that the timer has been successfully reset. However, the humidifier should operate for the first 60 seconds of Test mode as long as your furnace is running. If your humidifier does not turn on, contact your installer. The humidifier may require service. We appreciate the opportunity to be of assistance. Sincerely,
Brett Phillips Technical Support Research Products Corporation
if it works in the test mode then it should be okay but you can get a humidity gauge from radio shack and set in the house to see how high or low its is. the humidifier is only going to give a max of 45% humidity
When your unit is on normal the outside unit works and the inside only the fan runs. your heat pump does not remove any humidity when it operates so the installation cotractor did not wire it to operate then. you can change the wiring on the humidifier to operate all the time by wiring it to the fan (g) terminal then it should work just turn it all the way to the lowest humidity when you are in cooling mode.
There is a devise called a current sensing relay (a little black box that hangs on a blower motor wire that senses current from that wire) If you have such a devise it should hang from the white (common) wire. Loop the wire through twice.
I had this problem several years ago. In order for the water to flow, the outside temperature sending unit must indicate to the controller that it is less than 60F. If not, the unit will not operate outside of test mode. Check the temp outside where your sending unit is (could the sun be heating that side of the house?) and ensure that the circuit to the sending unit is working. I had a bad wire splice inside a wire nut stopping the circuit. Took me a long while to figure it out.
If the outside temp and your sending unit circuit is ok, I wish you luck on your troubleshooting.
Turn the control knob to the test/reset position untill the change water panel light blinks to reset the change panel timer. Make shure the furnace is running calling for heat.Turn control knob to prior setting after resetting timer. Hope this helps.
Your solenoid may have seized. The best way to check is remove the cover off the humidifier pad housing, remove the rubber tube of the distribution tray and see if water comes out while in the test mode. If you have a volt meter you can test to see if you have 24volts at the two wires connected to the solenoid. If you have 24volts there but no water ,the solenoid is bad if not you may have a bad humidistat or humidifier transformer depending on how it is wired.