The control system has detected less than 2.0 AC amps through the igniter during the igniter warm up period.
Check all wiring between CCB’s J5 Socket (page 35) pins 1 & 2 and the hot surface igniter. Repair/replace anything worn or damaged as necessary.
Perform close visual inspection of the pins inside the CCB J5 plug and socket – ensure plugs and sockets are mating properly and providing good contact. Repair/replace anything worn or damaged as necessary.
With power turned on and a call for heat active – ensure there is 120 VAC between pins 1 & 2 of the CCB’s J5 Socket during the igniter warm up period. – the igniter lighting bolt icon will appear on the UIM display during the igniter warm up period. See Table 4 on page 30.
Turn off power to the water heater – disconnect wires to igniter at the igniter. Check for continuity between the two igniter wires. If the igniter shows to be an open circuit – replace the igniter. With power turned on and a call for heat active – check amp draw through the igniter with an AC amp meter during the igniter warm up period. This procedure is illustrated and explained on page 25. Replace igniter if amp draw is less than 3.0 AC amps.
Call the technical support phone number shown on the water heater labeling for further assistance if the problem has not been corrected after performing the procedures outlined here.