Brand new MasterTemp 125 not igniting

Pool Clown

In The Industry
Sep 5, 2008
2,191
Silicon Valley, CA
DO NOT try to light that heater with a lighter. You should never attempt to light a forced air type heater like that. Think about it, what do you think the air that is blowing out your lighter is mixed with? And you are bent over that hole while trying to light it?

Start by first checking the gas pressure as i suggested earlier. Even though you smell gas through the exhaust, it does not mean that you are getting enough for the correct fuel air mixture. Only after you have confirmed enough water column (gas pressure) is present, should you then move on to the igniter.

Edit: I missed the 2nd page of replies.

The gas valve has been way over tightened. Turn it back to its upright position. Not sure about that valve (as i have never seen it that far laid over before), but I do know that some gas valves will not function on their side. And you cant get to the valve shut off switch with it like that. So whether this is the cause or not, you should stand it back up. Hopefully, the yellow wire is not shorting out at the blower housing. That would definitely have an impact on operation of the heater.

Flame rectification is sensed for AFTER the heater has fired, not before. If i am to understand the problem correctly, this heater is not firing.
 
Last edited:

Cpshockl

Bronze Supporter
Mar 28, 2020
22
New Orleans
Ok thanks for the help everyone. Called a tech and cost me $200 to find out I BOUGHT A PROPANE UNIT! I feel like an idiot - sorry to waste everyone’s time. That’s what I get for shopping online at 2 am after drinking wine. At least the conversion kit looks fairly easy to install.
 
  • Wow
Reactions: mguzzy and PoolGate

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
29,068
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
Thanks for supporting TFP.

We all learned something from you.
 

setsailsoon

Gold Supporter
LifeTime Supporter
TFP Guide
Oct 25, 2015
4,281
Palm City/FL
Pool Size
12800
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-30 Plus
Ok thanks for the help everyone. Called a tech and cost me $200 to find out I BOUGHT A PROPANE UNIT! I feel like an idiot - sorry to waste everyone’s time. That’s what I get for shopping online at 2 am after drinking wine. At least the conversion kit looks fairly easy to install.
Cp,

Thanks for the follow up and the support! Don't feel too bad. You've taught us all a new thing to check for on new heaters. I never did ask for the model and serial number that could have helped. Also, when you do things it's easy to make dumb mistakes. Look at some of my previous posts for classic examples!

The conversion is indeed easy.

Chris
 

PoolGate

Gold Supporter
TFP Guide
Jun 7, 2017
6,478
Damascus, MD
Pool Size
29000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Jandy Aquapure 1400
And now you are way more familiar with your heater!
 

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