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All fine that the thermostat clicks when tuned, However just check the contact for Voltage as the contacts do get burnt at times, thus your element is not getting sufficient voltage

Raypak Pool &... | Answered on Sep 16, 2019


This is very common with Raypak. What you hear is the way the air flow drafts through the heater. Raypaks typically draft very well. The rise of the heat off the burners draws in fresh air at the bottom and sides of the heater through the louvers and expels out the top.
You need the right mixture of fuel and oxygen for efficient burn and proper draft. A week flame or inefficient fresh air and the heater will not draft properly. A 406 is a very big heater my initial reaction is to check the gas supply. My assumption is the gas line may be undersized, especially if this heater was recently installed in place of a smaller unit. If the gas line is undersized the heater may operate but in time the insides will soot like a chimney and also change the dynamics of the way it drafts. Soot can also be a fire hazard so it is worth having a professional take gas pressure readings.

Raypak Pool &... | Answered on Jun 20, 2019


Heater cool down is very important and needs to be done. A time clock with a firemen switch is how it is normally done. Never run a heater with out water flowing thru it.

Raypak Pool &... | Answered on Jun 17, 2019


If unit on controller make sure heater set all the way up let controller control heat if display wont go higher possible bad board

Raypak Pool &... | Answered on Jun 15, 2019


if millivolt and gas to pilot replace pilot generator assembly or check for blocked line if electronic check ignitor or heater element

Raypak Pool &... | Answered on Mar 14, 2019


unit will screw in or out for more pressure or less

Raypak Pool &... | Answered on Aug 11, 2018


replace temp sensor at header and wires to board

Raypak Pool &... | Answered on Aug 04, 2018


lower by burner rack follow silver tube from gas valve to ignitor

Raypak Pool &... | Answered on Jul 16, 2018


check amazon about 200 dollars but clean burner tubes and check gas pressure it over heated

Raypak Pool &... | Answered on Jul 04, 2018


if using a controller see if heat is enabled and control is calling for heat if no control check safety circuit and temp sensor

Raypak Pool &... | Answered on Jun 23, 2018


see if voltage to ignitor when this happens if no voltage bad board also check gas pressure might be running out that's why it turns off

Raypak Pool &... | Answered on Jun 19, 2018


temp sensor bad

Raypak 010104... | Answered on Jun 13, 2018


check gas pressure and safety circuit then ignitor sns means temp sensor bad

Raypak Free... | Answered on Jun 10, 2018


most times its just sensor make sure to keep water balance within specs or heat exchange next

Raypak Pool &... | Answered on Jun 02, 2018


make sure controller calling for heat then check pressure switch and safety circuit

Raypak Pool &... | Answered on May 10, 2018

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