I have a Teledyne LAARS JVT-100c 70,000BTU hot water heat on Propane at an altitude of 7.300 ft. in Colorado. Although 25 years old it has worked well but has several irritating issues that have been addressed by 2 well qualified boiler techs. (1) intermittently it will "blue fire" only 3 of the 4 burners with the 4th a "yellow flame". We turn the gas control valve to pilot and back immediately to burn and it clears up with all 4 "blue flame". (2) Intermittently the gas control valve will "buzz" with a high pitched sound. Again, turning the flame off clears it out. (3) Intermittently, the relay will activate with a loud "Click". These events may occur once or twice a day or not for 4 or 5 days.
The techs have changed the gas control valve, relay and the transformer so almost all the control components are less than a year old. Plus, the system has been disassembled and inspected, cleaned and reassembled at least 2x. I'm a rancher and mechanically inclined and watched their work. These were experienced guys. No problem there. I am left with the conclusion that the gas pressure must be fluctuating and not staying constant. We are on two 1,000 gallon LP tanks. How about some ideas?
The techs have changed the gas control valve, relay and the transformer so almost all the control components are less than a year old. Plus, the system has been disassembled and inspected, cleaned and reassembled at least 2x. I'm a rancher and mechanically inclined and watched their work. These were experienced guys. No problem there. I am left with the conclusion that the gas pressure must be fluctuating and not staying constant. We are on two 1,000 gallon LP tanks. How about some ideas?