Raypak Heater won't ignite

isriam

Well-known member
Jan 15, 2015
201
PHX
Raypak 2100, the old big green heater with what looks like a robertshaw ignition. I tried to warm the spa yesterday and it didn't get warm, so i checked and I could hear/smell gas but the thing wasn't hot. Where should I start checking?
 
i only have 4 lights, 2 green and 2 red. when the pump primes and flow is going, both green lights are lit. i think it believes it is started, but it really isn't.

also, where is the pilot light? if i take off the front cover i couldn't see it anywhere. is it lit 24/7 or does it only light on demand, then fire up the burners?

i dont know about electronic spark or milivolt. would pics help?
 
i only have 4 lights, 2 green and 2 red. when the pump primes and flow is going, both green lights are lit. i think it believes it is started, but it really isn't.

also, where is the pilot light? if i take off the front cover i couldn't see it anywhere. is it lit 24/7 or does it only light on demand, then fire up the burners?

i dont know about electronic spark or milivolt. would pics help?

When you open the unit up, look inside for a label and it will give you a model # or you can take a picture of it and post it here.

Knowing if you have a millivolt unit or the electronic spark system will determine where to start.

BTW, if you still smell gas turn the gascock on your line coming into the unit for now.
 
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also, when i turn it on the lights go green, and i hear it click and then a repeated clicking like constant. i think the loud click is the igniter, not sure what the constant quieter clicking is unless its gas ticking. i turned off the main valve.
 
I wouldn't go any further with this unit. I can see the floor of the unit is rusted thru. It also sounds like you might have a board issue as well.

This unit was made in 1998 and probably put into service that year as well. It's lived a good life and now time for replacement.
 
i was afraid of that. its worked great for me for the 3 years that i've owned the house, but we are putting it on the market this week to sell, and now the heater doesn't work. do you suggest replacing it with another 400k btu? or are newer heaters much more effecient? It is a 13k pool with a small hot tub attached.
 

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Prices are all over the place and surely if you purchase from a local company and have them install it, price will be way more than online. Remember, many companies want a professional install or they won't cover anything under warranty.
 
are you well versed and/or trained in a large gas appliance install? If not, it's an accident waiting to happen. I did install mine myself and learned a great deal along the way. I did have my father in law who works for a fuel and electric company there helping me too(yes, he is licensed). It gave my confidence, and he helped with things I had questions with..and more importantly could TEST everything before it was put into service full time.
 
it failed my initial home inspection but i had the homeowner kick in 1200 towards replacement cost and had no problems running it for 3 years.

You might need to change some of the gas line, shorter/longer, but the unions for the headers are the same and the electric might reach. On our older one the electric does come in lower but if there is enough slack you might be able to get it to reach where the newer ones electric is at.

If you are not sure on the gas then I would find someone to do that part.

Also keep in mind about the warranty and that manufactures want licensed installers to install it because of the warranty.
 
Yea the gas line is low and electric is about the middle. There's plenty of slack on electric but im mostly worried about the gas. Anyone have an installer in dfw that would do it for about 300?
 
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