20
Problem Probable Cause Remedy
Pulse cleaning never
stops
Pressure switch not wired to the
timer board correctly
Connect the pressure switch on the timer board to
Terminals 7 and 8 on TB3.
Pressure switch terminals on the
timer board jumpered
Remove jumper wire on Solid-State Timer board before
wiring to the Delta P Control.
High Pressure On or Low Pressure
Off setpoint not adjusted for system
conditions
Adjust setpoints to current conditions.
Pressure tubing disconnected,
ruptured, plugged, or kinked
Check tubing for kinks, breaks, contamination, or loose
connections.
Alarm light is ON
Alarm setpoint too low Adjust to a higher value.
Excess pressure drop Check cleaning system and compressed air supply.
Pressure tubing disconnected,
ruptured, plugged, or kinked
Check tubing for kinks, breaks, contamination, or loose
connections.
Delta P arrow keys do
not work
Improper operation Press and hold one of the three setpoint keys to use
arrow keys.
Programming keys disabled Remove the Program Disable jumper from Terminals 3
and 4 on TB2.
Cleaning light is ON,
but cleaning system not
functioning
Improper wiring Check wiring between the Delta P Control and the timer
board, and between the timer board and solenoid valve
coils.
Defective solenoids Check all solenoid coils for proper operation.
Timer board not powered Check power ON light on timer board's LED display. If not
illuminated, check the supply voltage to the timer board.
Check the fuse on the timer board. Replace if necessary.
Timer board defective If LED is illuminated, observe the output display. Install a
temporary jumper across the pressure switch terminals.
Output levels should flash in sequence. Check output
using a multimeter. Measure from SOL COM to a solenoid
output. The needle will
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