Jayco RV Owners Forum
 


Reply
 
Thread Tools Display Modes
 
Old 05-24-2016, 08:58 PM   #1
Member
 
Join Date: Sep 2012
Posts: 43
Water heater light, but goes out.

New 287BHSW (so yes, it is going in for repair).

Flip the switch for the WH, the gas solenoids open, the sparker sparks and the burner comes on ... for 5-10 seconds ! Wait about 30 seconds and it repeats. After 3 time, it quits trying and the little light next to the WH switch comes on ("failed to light" ?).

As I said, the dealer will ultimately have to deal with it, but what is the likely issue ?
__________________

theoldwizard1 is offline   Reply With Quote
Old 05-24-2016, 09:09 PM   #2
Senior Member
 
Robbbyr's Avatar
 
Join Date: Dec 2014
Location: Akron
Posts: 1,339
Does your stove light and have steady flames? Fridge work okay on propane? Furnace? Trying to figure out whether you may have a propane delivery issue. Sometimes a regulator can malfunction and not deliver enough pressure causing erratic operations.

If other appliances work okay focus on the water heater. Any spider webs in the gas burner tube? You mentioned this is a new unit, did it ever perform satisfactorily? Unfortunately it could be a bad control module, others have experienced similar symptoms and found that to be the case. But rule out the other things first if you can.
__________________

__________________
Rob R.
Akron, OH
2014 Seneca 37TS
Toads: 2014 Ford Explorer Sport or 2013 Ford Focus ST
Robbbyr is online now   Reply With Quote
Old 05-24-2016, 09:35 PM   #3
Member
 
Join Date: Sep 2012
Posts: 43
Quote:
Originally Posted by Robbbyr View Post
Does your stove light and have steady flames? Fridge work okay on propane? Furnace? Trying to figure out whether you may have a propane delivery issue. Sometimes a regulator can malfunction and not deliver enough pressure causing erratic operations.

If other appliances work okay focus on the water heater. Any spider webs in the gas burner tube? You mentioned this is a new unit, did it ever perform satisfactorily? Unfortunately it could be a bad control module, others have experienced similar symptoms and found that to be the case. But rule out the other things first if you can.
All other gas appliances work fine. I actually got the water heater to light and STAY LIT, once, by using a BBQ lighter.
theoldwizard1 is offline   Reply With Quote
Old 05-24-2016, 10:03 PM   #4
Senior Member
 
Join Date: Aug 2015
Location: Albany, OR
Posts: 592
Most of these types of devices have what is called a flame sensor. Its job is to determine if the burner is lit and if not, to turn off the gas. Based on your description of the problem, I would suspect that is the issue. Sometimes the sensor is a separate electrode that pokes into the flame, sometimes it is actually integrated inside the sparker.
See if you can find any info on how this is adjusted in your manual and also "wiggle" all the wires you can find that plug into connectors. Sometimes a bad connection can cause these kinds of issues.
__________________

2015 Jayco 27RLS
2015 Ford F250 6.7PSD
DanNJanice is offline   Reply With Quote
Old 05-24-2016, 10:09 PM   #5
Member
 
Join Date: Sep 2012
Posts: 43
Quote:
Originally Posted by DanNJanice View Post
See if you can find any info on how this is adjusted in your manual and also "wiggle" all the wires you can find that plug into connectors. Sometimes a bad connection can cause these kinds of issues.
The manual is pretty useless. The sensor must be part of the sparker, because the only thing "in the flame" are the sparker and the ground electrode. Reseated all the connectors. Also found out there is a 2A fuse kind of hiding there. I'm sure I don't have a 2A fuse in my bag of spares !
theoldwizard1 is offline   Reply With Quote
Old 05-24-2016, 10:21 PM   #6
Senior Member
 
BuddyRay's Avatar
 
Join Date: Jan 2016
Location: Decatur
Posts: 643
I had a similar problem a few years ago on a Sunline - but same water heater.
The "flame sensor" - technical term is thermocouple. On these units it is built into what you call the "ground electrode". Something in this unit expands when it gets hot - and pushes a switch in the controller. If the thermocouple doesn't get hot enough - the controller assumes the gas didn't "light" and shuts off to prevent gas build up.

In my unit, after changing controllers and much other grief, I discovered that all I needed to do was bend the bracket holding the thermocouple to put it more in the center of the flame when it was lit. I hope it's that simple for you.
__________________
Buddy Ray - Atlanta
---------------
Jayco 2016 Eagle HT 26.5RLS
Ford 2016 F150 Lariat, 3.5L V6 Ecoboost
Max Tow Pkg, 36gal tank
Reese Sidewinder and Reese Titan 16k hitch
BuddyRay is offline   Reply With Quote
Old 05-24-2016, 10:33 PM   #7
Member
 
Join Date: Sep 2012
Posts: 43
Quote:
Originally Posted by BuddyRay View Post
The "flame sensor" - technical term is thermocouple.
If it looks like the typical WH thermocouple, then no I don't have anything like that.

Quote:
Originally Posted by BuddyRay View Post
On these units it is built into what you call the "ground electrode". Something in this unit expands when it gets hot - and pushes a switch in the controller.
I called it a "ground electrode" because it is welded to the bracket that hold the sparker.


Quote:
Originally Posted by BuddyRay View Post
In my unit, after changing controllers and much other grief, I discovered that all I needed to do was bend the bracket holding the thermocouple to put it more in the center of the flame when it was lit. I hope it's that simple for you.
The one time I did get it to light and stay on, I observed that both electrodes were well into the flame. In fact their tips were red hot.
theoldwizard1 is offline   Reply With Quote
Old 05-24-2016, 11:00 PM   #8
Senior Member
 
Join Date: Apr 2016
Location: Memphis
Posts: 231
Having the same issue with my water heater on our new trailer. Taking it in for service for that and other issues. All other gas appliances work fine (except furnace which won't light at all). If I let the water heater cool off for a long period it will light fine and heat a tank. After that it is hit or miss on whether it will light again. Mostly it won't. I tried adjusting the flame sensor a bit more into the flame area, connections check, etc. No luck. Service dept says likely a bad controller or sensor.
suzhou is offline   Reply With Quote
Old 05-24-2016, 11:34 PM   #9
Junior Member
 
Join Date: Mar 2016
Location: Georgetown
Posts: 4
I had a similar problem with my new 267 BHSW. The water heater would cycle on the first time but would have the same problem as yours when trying to cycle back on. I had to take it in to the dealer three times before they finally replaced the circuit board. I have had it out one time since and it worked fine. Something i noticed on mine was that the igniter would continue to run after the gas had lit.
swtbrad is offline   Reply With Quote
Old 05-25-2016, 06:21 AM   #10
Member
 
Join Date: Sep 2012
Posts: 43
Quote:
Originally Posted by swtbrad View Post
Something i noticed on mine was that the igniter would continue to run after the gas had lit.
If the little LEDs on the controller indicate the the igniter is "firing" then, yes, the one time I got the WH to stay lit, the igniter continued to run.
__________________

theoldwizard1 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 08:56 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.