Ideal Concord CXA 120 H - firing and cutting out all the time. It's igniting for a 2 seconds, 5 seconds, 30 second, 50 seconds ish then cutting out and the times it stays fired for is different all the time.nit never goes in to lockout it just keeps firing over and over again. I've changed the 2 PCBs, spark electrode, flame electrode. I've also checked all electrical aspects throughout boiler and all stats are fine too. Any suggestion? Thanks in advance.