I have purchased two and neither one will fire up the boiler? When I touch the red and white wire together bipassing the CT87K the boiler fires up.
1601324
I through mine a way after three hours of trying to make it work. Total waste of money
1601325
I really don't know. These have a circuit board in them. Maybe an older style mercury style switching thermostat would be better
1601326
Other than having another faulty thermostat, I would check the mounting. If not mounted correctly the unit may not operate as designed. One other thing, be sure you are exceeding the room temperature when operating the unit. If the room temperature is higher than the thermostat setting it will not fire.
1601327
I ran into the same problem. The CT87K is a microvolt thermostat, meaning it pulls power from the red and White wires to close the contact. Confusing? What you need and what I installed for a contact closer furnace is the T451A3005, https://customer.honeywell.com/en-US/pages/product.aspx?cat=HonECC%20Catalog&pid;=T451A3005/U I got mine off of Ebay for $20 with free shipping. Sorry Amazon but you do not carry this one.
1601328
Im' not sure it was sometime ago, check to see if wiring is polarity sensitive +-, I do remember that when first connected it it took about 20 sec. to turn on the furnace, and it has to be set about 10 higher than you want the temp. Benefits of modern technology? hopes this helps
1601329
A more thorough description of your connections would be helpful. I don't know what you mean by "boiler." I'm using the device for a household gas furnace. Most obviously, do you have the thermostat set for a temperature several degrees above the room temprature. Also, your hands may be warming up the thermstat above room temperature.
1600309
The only thing I can think of is incorrect wiring or you have it hooked up to something that is trying to draw more amperage than the unit can handle and it's tripping rather than switching anything on. Perhaps it's a protection circuit? Have you tried hooking it up to something that draws lower power? I had mine wired to a heating pad as a warming pad for a while to start seedlings. Then I wired it into a home made aquarium type heater. I don't get any 'alarms', my unit works perfectly every time. I'd have to see how you wired it and what it's wire to in order to help. Sorry.
1559093
The oscillator is likely broken. I had the same problem. The fan was working, but no vapor. I called Venta directly and he told me to take the cartridge out and try again. Still got no vapor. He said it was the oscillator. It was just over 1yr old, but I had only used it a total of about 4 mos the previous season so it was out of warranty and I was out of luck. I had one previously for almost 6 years and it worked great. I wouldn't trust this model anymore. To expensive for a one year warranty when so many seem to fail.
145505
I haven't installed mine yet, but typically if the pilot doesn't stay lit after holding the valve in the pilot position for a minute after lighting, it is usually either a fault thermocouple or the pilot flame isn't positioned correctly on the tip of the thermocouple. I am assuming that your gas pressure has been checked and the pilot flame is adjusted correctly.
782099
Couple of possibilities. 1)check for computer codes. I there I was code that has been computer error attached (I think it is 601) then there Is a fault In computer and the ECM has to be replaced. 2) the heater has its own separate computer an could be sending the wrong signal to the blower or 3) and most likely the resistor has faulted an you have to change the resistor block. This Is cheapest an most likely. Mine has part not col temperature rated so will not work in -40 weather, have to use heating torch to warm up resistor block first.
281213
If all the other electrodes work but the comb attachment, then it's the comb electrode that is defective. The only solution is to contact the seller and get the seller to send you another replacement. Good luck!
1776767
"C" wire ? you mean common, or ground wire ? No. 2 wires in from furnace/boiler is all I connected.
466336
same thing with me too........i bought two. one worked with the fan alaways on.The second never worked even for a minute.....not good...
2218316
Like another commenter I found that the batteries only lasted a week or so when used in conjunction with Z-wave/SmartThings controller without a "C" wire. When the batteries die the thermostat stops sending any signal to boiler so you better hope it's not below freezing and/or that someone is around to change them. I now have "C" wire connected and all is well so far.
2147896
I haven´t had any problem, maybe you should check if your units has the same group ID!!! if the problems continue you should sent you unit to service... have try to fired your flas with another master unit?
325108
You are probably going to need the factories help. Make sure unit is unplugged. Pull the tub off. Check for broken wires.Check the brushes. These are what transfers power to the heating head. Make sure the they are touching the head, the area they touch is clean. If ok. Then you will need an Ohm meter to go any further. Check at each of the brass bars on the heating head and you should get about 13 Ohms. A little higher is Ok but if much higher heater is open. Then check with great Northern for parts. MAKE SURE UNIT IS UNPLUGGED WHILE DOING THESE CHECKS AND TESTS. Good luck
932946
I have never repaired one of these but basically there is going to be a thermal fuse in series with the heating element. Odds are that fuse has activated by open circuit /defect. It's a common problem with devices operating near the fuse threshold. You would take it out, read the rating marked on the side of it, order a replacement on an electronics supplier website like Digikey, then put a new one in. It needs to be brass crimped on due to the heat, not soldered.
1140918
Problem could be very, but check the ignitor to see if it is too close to the burner and did not make enough spark, the other thing to check is to make sure the wire is ground, otherwise it will not spark.
347697
Good question! Let me know if you find one. This would be an excellent heater if the manufacturer did not use thermocouples that they know are defective. Why do I say that? Because nearly EVERY review that I have read States the same problem. Now I have a heater sitting out in my garage that will not light! I recommend that any person thinking of purchasing this heater buy a Mr Heater instead. They work! If World Marketing would send me a new thermocouple (that works), I would install it.
1637310
Per the internet and some experience with thermocouples, it may mean bad thermocouple. If this is the case it is broken.
74105
sorry, I don't understand your question. But I have had no problems with this double boiler and I just love it. Clarify and ask again if you need to.
185424
I have been through 4 of them too. All of a sudden a red light flashes on the controller and if you unplug it and then plug it back in it works for a while. This is the signal that the heating pad is starting to fail.