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After resolving the cause of any error code or any service work on valve, press NEXT & REGEN simultaneously for 5 seconds or disconnect power supply for
5 seconds at PC board and reconnect to resynchronize software with piston position.
VALVE ERROR CODES
Error Code 101
- Unable to recognize
A1. Control not reading piston position
A1. Resynchronize software with piston position by
start of regeneration
pressing start of regeneration NEXT and REGEN
buttons simultaneously for 5 seconds, until screen
changes. Initiate regeneration to verify function by
pressing and holding REGEN button until regeneration
initiates, step through regeneration modes by pushing
REGEN button each time motor stops.
A2.
Verify motor connection to PC board; motor wires intact
and motor fully inserted to engage pinion.
A3. Verify correct assembly; PC board snapped onto drive
bracket and wires are in back plate guides and drive
bracket snapped onto back plate. Verify three drive
gears are in place on drive bracket & reflective surfaces
are clean.
Error Code 102
- Unexpected stall
B1. Mechanical Binding
B1a
. Check for any foreign material in stack assembly impeding
piston movement and remove; verify seals intact and
in place in stack assembly, if not replace stack assembly.
B1b
. Check for incorrect assembly, drive bracket not snapped
into place, motor pushed inside of barrel of drive bracket
(black gear on motor end should be flush with end of shaft).
B1c. Drive gears unable to rotate freely - replace gear(s) if not
rotating freely.
B2. Improper voltage being delivered
B2. Motor unable to move piston, check voltage is present
to board
on 12V DC motor at start of regeneration modes.
Transformer should provide 12 volts when plugged
into outlet and not attached to board - if not replace
transformer
Board does not have
LED display
1. Transformer unplugged
A1. Plug transformer into uninterrupted power supply, verify
power connection is plugged into 4-prong connection
on PC board
2. No electric power at outlet
B1. Repair outlet or use working outlet, should read 115V
with voltmeter at outlet. Verify power cannot be turned
off with another switch
3. Defective transform
er
C1. Check voltage at connection with transformer plugged in.
Should read >12 volt AC with voltmeter. Replace trans-
former if inadequate voltage
4. Low battery after power outage
D1. If power outage occurred and battery on board has low
voltage, the microprocessor may not recover cleanly and
display properly. Disconnect power from circuit board
and remove battery, wait 5 minutes. Reconnect power,
if displays appropriately, replace battery (lithium
CR2032). If you do not have battery at time of evaluation,
leave battery out of board, only concern will be time of
day reset will be needed if power outage occurs again.
Voltage on battery should be > than 3 volts
MAV ERROR CODES
After resolving any MAV error or servicing MAV, resynchronize software with piston positioning by pressing NEXT and REGEN buttons simultaneously for 5 seconds
or disconnecting power from PC board for 5 seconds and reconnecting.
ALTERNATING MAV DRIVE - ERROR CODES 106 & 107
Error Code 106
- Alternating MAV ran too long
A1. Control valve is programmed for alternating or as
NHWB without having MAV connected to board.
Reprogram valve to proper setting or connect MAV
to alternating MAV drive on PC board
A2. MAV motor not fully engaged with gears
Error Code 107
- Alternating MAV stalled
Mechanical Binding
B1. Open MAV and check for foreign material on stack
assembly, remove if present, verify seals intact and in
place. If not, replace stack assembly
B2. Drive gear should spin freely-replace if necessary
AUXILIARY MAV DRIVE - ERROR CODES 116 & 117
Error Code 116
- Auxiliary MAV ran too long
A1.
Control valve is programmed for auxiliary MAV without
having MAV connected to board. Reprogram valve to
proper setting or connect MAV to two-pin connection
labeled auxiliary drive on PC board
A2. MAV motor not fully engaged with gears
Error Code 117
- Auxiliary MAV stalled
Mechanical Binding
B1. Open MAV and check for foreign material on stack
assembly, remove if present, verify seals intact and in
place. If not, replace stack assembly
B2. Drive gear and reducing gears should spin freely,
replace if necessary
1. Control valve stalled in regeneration
A. Motor not operating
A. Replace Motor
B. No electric power at outlet
B. Repair outlet or use working outlet
C. Defective transformer
C. Replace transformer
D. Defective PC board
D. Replace PC board
E. Broken drive gear or drive cap assembly
E. Replace drive gear or drive cap assembly
F. Broken piston retainer
F. Replace drive cap assembly
G. Broken main or regenerant piston
G. Replace main or regenerant piston
TROUBLE SHOOTING
PROBLEM
CAUSE
CORRECTION
