Technical information

Servicing should only be performed by a Qualied Service Technician

TEST 6 – INDUCER ON – NO IGNITION

TEST 6 24 VAC Check of Blower Prover/Low Gas Pressure 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 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 (draft) proving switch.

NATURAL GAS ONLY

24V is present from each switch

terminal to ground.

Check wiring from blower switch to low gas pressure switch.

Voltage check to each terminal

of low gas pressure switch and

ground shows only voltage on 1

terminal

Switch is open - test for a minimum of 5.2 ± " W.C. Natural Gas or

10.5" Propane, flowing supply gas pressure (should also see 3 Flash

LED code). Replace low gas pressure switch.

Voltage is present to each

pressure switch terminal and

ground

Check wiring from low gas pressure switch to ignition board

receptacles E1, Pin 10.

CONDITIONS:

• Power On.

• Plugs in Receptacles.

• Inducer operating.

• No power to Hot Surface Igniter (HSI)

Note LED flash code.