Hd Troubleshooting - Raypak HD401 Installation & Operating Instructions Manual

HD101-HD401 Troubleshooting
Does the main power switch provide
Step 1
power to the green power LED?
YES
Step 2
Is there a Call For Heat?
YES
Does the Pump come on?
Step 3
YES
Step 4
Does the combustion air
blower come on?
YES
Step 5
Is 24VAC at the NO side of
the air pressure switch?
YES
Is 24VAC at PS on ignition module?
Step 6
Is connecting plug secure?
YES
Step 7
Does igniter prove?
YES
Is the flame sensor signal to the ignition
Step 8
module greater than 1 Micro Amp (µA) DC?
YES
Does the unit run longer
Step 9
than 10 seconds?
YES
Step 10
The unit is okay
Call our Technical Service Department
NO
Is Disable connection intact?
YES
NO
NO Is there 120VAC at the pump or
NO Is there120 VAC at the blower,
between the red & white leads?
NO
Check safeties, I.E. Flow switch, high
limit, vent switch, thermostat, etc.
NO
correct? Should be about 0.5"
Replace low air pressure switch.
NO
Is Amp draw during heat-
NO
up for HSI greater than
YES
NO
Does the unit run at least
NO
5 seconds?
NO
Is the polarity of incoming
power supply correct?
NO
Correct supply wiring
1-800-947-2975 Outside California
1-800-627-2975 Inside California
Check the switch, transformer
and/or line voltage
NO
Is temperature controller
installed?
pump relay contacts?
Is blower pressure setting
W.C. (low speed)
YES
Correct wiring.
NO
3.1 Amps?
Is air switch bouncing?
Is inlet gas supply pressure
correct?
NO
YES
Is manifold gas
Yes
pressure correct?
YES
Does the air pressure
reach 0.9" W.C.?
NO
YES
Is sensor probe grounded?
NO
40
Reattach.
NO
Install.
Check and correct power
NO
connections at main terminal
block, circuit breaker panel or
pump relay.
Check and correct power
NO
connections at main terminal
block, ignition module, circuit
breaker panel or blower relay.
Correct the blower
NO
shutter setting.
NO
Is the air filter or
air intake blocked?
YES
Remove blockage
and/or replace filter
Replace HSI
NO
YES
NO
Correct inlet gas supply pressure
Adjust manifold gas
pressure.
Replace gas valve
YES
Replace high air pressure switch
NO
Is the air filter or air
intake blocked?
YES
Remove blockage
and/or replace filter
YES
Replace Sensor
Replace blower