American Water Heater (A)BCG38T500-8P ユーザーズマニュアル
32
Servicing should only be performed by a Qualifi 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
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
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.
• check for blocked exhaust.
• check that blower outlet exhaust damper is open.
• replace blower prover switch.