American Water Heater (A)BCG38T500-8P Water Heater User Manual


 
32
Servicing should only be performed by a Quali ed Service Agent
TROUBLESHOOTING
TEST 6: BLOWER ON, NO IGNITION
Conditions:
Power on
Plugs in receptacles
Blower (Draft Inducer) operating
No power to Hot Surface Igniter (HSI). Note LED flash code.
Blower
Exhaust
Blower
Prover Switch
Blower
(Draft Inducer)
Hot Water Outlet
Check E4 pin 2 to ground
Figure 25
TEST 6
24 VAC Check of Blower Prover Switch Circuit
IF......... then............
ignition board receptacles E1, Pin 7 to ground
shows no voltage
replace Ignition board.
E1, Pin 7 has 24 Volt to ground check wire connection to and from blower (draft inducer).
voltage check of each blower switch terminal to
ground shows voltage to only 1 terminal
• switch is open. Check for proper draft (should also see LED 3 flash code).
• check for blocked exhaust.
• check that blower outlet exhaust damper is open.
• replace blower prover switch.