IF code on a 1 year old H250f that ran fine last year. Everything checks out for start up except the gas valve gets 24 volts for about 3 seconds then drops to zero. Is the valve momentary or constantly supplied power while in operation?
Hayward H200 Ignition failure code
- Thread starter Alleykat0498
- Start date
- Jul 21, 2013
- 66,049
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Welcome to TFP.
Gas valve gets 24V the entire time the safety systems say the heater should run.
Check the flame sensor and igniter. Chances are flame is not being sensed and so heater is shutdown.
@swamprat69 @1poolman1 can provide more details when you show us what you find.
Gas valve gets 24V the entire time the safety systems say the heater should run.
Check the flame sensor and igniter. Chances are flame is not being sensed and so heater is shutdown.
@swamprat69 @1poolman1 can provide more details when you show us what you find.
Its that "3 seconds" that says one of the boards is bad (Not the display board and both the others need to be replaced at the same time). May still be a warranty. Give it a try.
This was my thought as well, Ive serviced a bunch of the H series heaters and understand that its a 2 stage valve. After the purge cycle, you hear the first click of the first stage, but never the second where gas actually starts to flow and ignition takes place, its at that point the 24 volts to the valve drops out. This client owns multiple units and Id prefer not to just start throwing parts at it. In my logic wouldnt this all be caused by the ICB?
swamprat69
Well-known member
Trial for ignition in which the gas valve is powered is 4 seconds! The gas valve is not a 2 stage opening valve, but a dual seated valve ( "VR" on Honeywell ) with standard opening ( "M" on Honeywell). Troubleshoot normally by assuming there is no ignition during the 4 second trial for ignition in which the gas valve is powered.
swamprat69
Well-known member
Heating mode:The control continually compares the water temperature with the set point and the high limit temperature. When the water temperature is more than 1° below the set point a call for heat is generated and a heating cycle is initiated.1. The control checks for open contacts at the blower vacuum switch.2. The control energizes the blower and the igniter. The igniter heat-up time is approximately 20 seconds. The blower is running a pre-purge cycle during this time.3. The control checks for closed contacts at the blower vacuum switch.4. When the igniter reaches the proper temperature a 4-second trial for ignition begins. The control opens the gas valve and monitors flame current. The igniter is turned off when flame is sensed or after 4 seconds.5. The blower vacuum switch, the temperature limit switches, the vent pressure switch, the water pressure switch, the water temperature sensors, and the flame sensor are constantly monitored during a call for heat to assure the heater is operating properly.6. When the thermostat is satisfied and the call for heat ends the control immediately de-energizes the gas valve. Flame is extinguished.7. The control operates the blower during a 30-second post-purge period.