blinky Posted November 25, 2020 Report Share Posted November 25, 2020 Heater and circulating pump replaced in 2018. Tub is not heating now but temp says 102. Did some voltage checks and ohms on high limit and temp were both about 22k ohms. What provides water temp to control panel? Any ideas where to go from here? Quote Link to comment Share on other sites More sharing options...
blinky Posted November 25, 2020 Author Report Share Posted November 25, 2020 14 minutes ago, blinky said: Heater and circulating pump replaced in 2018. Tub is not heating now but temp says 102. Did some voltage checks and ohms on high limit and temp were both about 22k ohms. What provides water temp to control panel? Any ideas where to go from here? attachments (14).zip 386.73 kB · 0 downloads attachments (14).zip 386.73 kB · 0 downloads Ready light is flashing. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted November 26, 2020 Report Share Posted November 26, 2020 Remove filters. 10 hours ago, blinky said: both about 22k ohms. You have to be precise, a difference of a few hundred ohms can read as a faulty thermistor. Did you get new thermistors with the heater? Are you getting a big stream of tiny bubbles from the heat return? I know, that's kinda vague, but you should remember how it looked with the new circ pump. Is it still the same? Quote Link to comment Share on other sites More sharing options...
blinky Posted November 27, 2020 Author Report Share Posted November 27, 2020 Dealer did the heater and the circulation pump. Invoice just says heater assembly, circulation pump and bullet check valve. Flow seems really good. I will have another look at it Flow sensor is not being used. Wires at the board have been wire nutted together. I will check the readings again. Thank you. Quote Link to comment Share on other sites More sharing options...
blinky Posted November 27, 2020 Author Report Share Posted November 27, 2020 Left the filter out. filter is new. Took readings again, 200k scale. Inlet 22.4 outlet 22.2 water temp 41 f. with circulation pump running. I had 14.9 ohms on the heater. everything seems to work just no heat. The heat on LED never lights up. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted November 27, 2020 Report Share Posted November 27, 2020 Verify the flow switch jumper. Post a pic of the circuit board. Quote Link to comment Share on other sites More sharing options...
blinky Posted November 28, 2020 Author Report Share Posted November 28, 2020 Quote Link to comment Share on other sites More sharing options...
blinky Posted November 28, 2020 Author Report Share Posted November 28, 2020 Flow switch jumper checked out visually. In hindsight I should put my meter on it. I took the wire nut off and checked the condition of connection. 1 Quote Link to comment Share on other sites More sharing options...
blinky Posted November 28, 2020 Author Report Share Posted November 28, 2020 20 hours ago, RDspaguy said: Verify the flow switch jumper. Post a pic of the circuit board. @RDspaguy Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted November 28, 2020 Report Share Posted November 28, 2020 In your pic, below the flow switch connection, there appears to be some discoloration on the board. It's hard to tell, is that a reflection in the pic or a dark patch on the board? Quote Link to comment Share on other sites More sharing options...
blinky Posted November 28, 2020 Author Report Share Posted November 28, 2020 I think is just a shadow. The tub is sunk in a deck and not easy to get at. I looked the board over closely with a flashlight and blew up my pictures and didn't see anything. I ordered a pair of thermistors. I guess I will start there. Temperature is dropping. If I can't get it going Ill have to drain it soon. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted November 29, 2020 Report Share Posted November 29, 2020 That's the next thing to try, though being out by 200 ohms is not much. I suspect you have a board issue, but definitely try the thermistors first. Quote Link to comment Share on other sites More sharing options...
blinky Posted December 9, 2020 Author Report Share Posted December 9, 2020 Ended up retrofitting the IQ2020 with the IQ2020 Eagle 76836, control head with 76845 and LED light with 74930. It was an in the deck install with a 2x6 across the upper part of the service area. Everything worked on the tub but no heat. Original topside control was pretty beat up. After I removed the old IQ2020 I was able to give a good look and saw this. 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.