I have a jandy LT200 propane heater which doesn't turn on. When power is on the lights on electronic board all flash once and then go off. 2amp fuse going to transistor is fine, not blown. I replaced the ignition control and that wasn't the problem. The red LED light on the ignition control comes on for one second when powered up and then goes out. I also replaced the blower pressure switch. It's as if a fault occurs and power shuts off
Pool & Spa - Jandy - Laars Lt 250,000 Btu Heater
Answers & Comments
If this heater is hooked up to automation check the temperature reading on the indoor remote. If it reading over 104 the sensor is bad and the heater will not fire thinking that it is at set temp.
Thx for your reply, however, this heater doesn't have automation check. It's not a digital temp unit. It gas manual knobs for the heater control. A neighbor thinks the temperature circuit board is bad but How do u check for that part being bad?
have you tried the spa thermostat?