Raypak Free Hydraulic Lift Gate Delivery - No L... - Answered Questions & Fixed issues

refers to flame sensor in combustion chamber

I'm assuming, first, that your pump is running when you turn up the temp, otherwise, the high temp switch will turn off the gas. Then, it could be any of the switches hooked in series that must have flow thru them to let yhe ignition open the gas valve. ie could be water-flow switch not sensing enough eater running by it. Bypass (jumper) one at a time to find the culprit. Good luck...

The temp sensor is on top of the header side of the pump behind the panel. Unscrew the side panel above the header and unscrew the small fitting to remove the sensor, replace it and plug in to circuit board

do you have this on a timer? if so run without timer if pump goes off and heater is on it will error out if keeps on check gas pressure to heater if too low it will error out

they are marked on headers

gas valve stuck open

dirty pilot tubing or need new pilot generator

sns occurs when sensor reads temps under 36 degrees or above 110 degrees. check temp of of water to verify.....may need a new water sensor

check the tranformers primary and secondary sides..... should get either 120 or 240 on primary side......24 volts on secondary side

your looking for a new pilot generator.

Press and hold the "temp up, temp down and mode" buttons at the same time for 5-7 seconds...The display should show REMon or REMoff... You have REMon probably. Toggle with the up/down buttons to show REMoff... This should default back to original display. If not, push the mode button....

hl 1 is a high limit fault

Fixing is usually not an option due to the metal being so thin throughout the exchanger. Unfortunately the replacement is not cheap.A replacement will run pretty deep in to the price of a new heater, and all the other components are still old and subject to fail. Most people opt to replace the heater for a long term solution.Keep a closer watch on the pH, alkalinity and calcium next time to prevent this from happening again. Vinyl and fiberglass pools experience this more because the pH has a tendency to drop. Plaster pools have pH that wants to rise.

Optimum is not a Model Name.What model do you have, look on the metallic label on inside of heater, there you will find the model name & Model number

Not familiar with "Optimum" by Raypak.346 is probably your output BTU/Size in 100,000's, so 346,000 btuWhat is model number of your heater? Metallic label on inside of the heater behind the front cover/door.Some Common heater models current & obsolete are as follows:Gemini, Versa, RP2100, Delta, xfyre

Here you Go!

Check for proper flow at your pump and at the return jets. You have to sustain proper water flow in order of rthe heater to function properly. If the flow is adequate, then use a jumper lead across the pressure switch terminals on the heater and see if it will fire and remain on. If so then the pressure switch is either faulty or you have a flow problem which is not generating enough water pressure to trip the switch. DO NOT adjust the pressure switch, as it is factory set. Check your pump for a clogged inlet or other possible blockage before the heater.

I have the exact same model with the exact same problem. Did you ever figure out what the problem was? I just picked up a new gas valve, but maybe i should check the flame sensor first. In my systems case the electronic ignition fires, which lights the pilot, but it keeps firing even though the pilot light is lit. So I think it could be the flame sensor, how do I remedy that or check it out. I would like to check this out first before dropping in the gas valve, cause they arent cheap and I can still return it before its installed.

This issue sounds tricky. I recommend you callthe Raypak technical support at 800-947-2975 or 800-627-2975 and they should beable to help you figure this issue out.

I hope this helps.

You didn't indicate what model heater you have, but here are some of the fault codes you might see. Could it have been GVO? You can download a manual for your exact model at www.raypak.com
BD1 Board failure
EEP Microprocessor error
FAN Blower pressure failure
FFL Flame sensing when pilot and gas
valves are closed
GVC Gas valve closed
GVO Gas valve open
HL1 High limit switch #1 open
HL2 High limit switch #2 open
IGN Ignition failure
ILO Ignition lockout - Propane units only
PRS Water pressure switch open
ROL Heat roll-out safety switch open
SNS Sensor failure, Water temp. below 36°F
or above 110°F
VNT Vent switch open