Raypak HD101, HD401 manual HD Troubleshooting, Step Step Step Step Step

HD Troubleshooting

Does the main power switch provide

NO

Check the switch, transformer

power to the green power LED?

and/or line voltage

Step 1

YES

Is Disable connection intact?

NO

Reattach.

Step 2

YES

Is temperature controller

Is there a Call For Heat?

Install.

NO

NO

installed?

YES

Check and correct power

Step 3

Does the Pump come on?

NO

Is there 120VAC at the pump or

NO

connections at main terminal

pump relay contacts?

block, circuit breaker panel or

pump relay.

YES

Step 4

Step 5

Does the combustion air	NO
blower come on?
YES

Is 24VAC at the NC side of

		Check and correct power
Is there 120VAC at the blower or		connections at main terminal
	NO
blower relay contacts 1 and 5?		block, ignition module, circuit
		breaker panel or blower relay.

Is blower pressure setting Correct the blower

the air pressure switch?

YES

NO

correct? NO shutter setting.

YES

Replace air pressure switch.

Step 6

Step 7

Step 8

Step 8

Step 9

Is 24VAC at PS on ignition module?

NO

Correct wiring.

Is connecting plug secure?

YES

Is Amp draw during heat-

Does igniter prove?

NO

up for HSI greater than

NO

Replace HSI

3.1 Amps?

Is air switch bouncing?

YES

YES

NO

Is the flame sensor signal to the

YES

Is inlet gas supply pressure

ignition module greater than 1 uA DC?

NO

NO

correct?

YES

YES

Correct inlet gas supply pressure

Is manifold gas pressure

Is the unit running?

NO

correct?

YES

NO

Replace gas valve

YES

The unit is okay

Call our Technical Service Department

Adjust manifold gas

1-800-947-2975 Outside California

1-800-627-2975 Inside California

pressure.

35