Troubleshooting guide
16. E3, Err – 1003, Err –
103 = Control valve
motor ran too long and
was unable to find the
next cycle position
A. Motor failure during a regeneration
A. Check motor connections then Press NEXT and
REGEN buttons for 3 seconds to resynchronize
software with piston position or disconnect
power supply from PC board for 5 seconds 
and then reconnect.
B. Foreign matter built up on piston and stack
assemblies creating friction and drag enough 
to time out motor
B. Replace piston and stack assemblies. Press
NEXT and REGEN buttons for 3 seconds to
resynchronize software with piston position 
or disconnect power supply from PC board 
for 5 seconds and then reconnect.
C. Drive bracket not snapped in properly and out
enough that reduction gears and drive gear do
not interface
C. Snap drive bracket in properly then Press 
NEXT and REGEN buttons for 3 seconds to
resynchronize software with piston position 
or disconnect power supply from PC board 
for 5 seconds and then reconnect.
17. E4, Err – 1004, Err –
104 = Control valve
motor ran too long 
and timed out trying 
to reach home position
A. Drive bracket not snapped in properly and out
enough that reduction gears and drive gear do 
not interface
A. Snap drive bracket in properly then Press 
NEXT and REGEN buttons for 3 seconds to
resynchronize software with piston position 
or disconnect power supply from PC board 
for 5 seconds and then reconnect.
18. Err -1006, Err – 106,
Err - 116 = MAV/
SEPS/ NHBP/ AUX
MAV valve motor ran
too long and unable
to find the proper
park position
Motorized Alternating
Valve = MAV
Separate Source = SEPS
No Hard Water Bypass =
NHBP
Auxiliary MAV = AUX
MAV
A. Control valve programmed for ALT A or B, 
nHbP, SEPS, or AUX MAV with out having 
a MAV or NHBP valve attached to operate 
that function
A. Press NEXT and REGEN buttons for 3 seconds 
to resynchronize software with piston position 
or disconnect power supply from PC board for 
5 seconds and then reconnect. Then reprogram
valve to proper setting
B. MAV/NHBP motor wire not connected to 
PC board
B. Connect MAV/NHBP motor to PC board two
pin connection labeled DRIVE. Press NEXT and
REGEN buttons for 3 seconds to resynchronize
software with piston position or disconnect
power supply from PC board for 5 seconds 
and then reconnect.
C. MAV/NHBP motor not fully engaged with
reduction gears
C. Properly insert motor into casing, do not force
into casing Press NEXT and REGEN buttons for 
3 seconds to resynchronize software with piston
position or disconnect power supply from PC
board for 5 seconds and then reconnect.
D. Foreign matter built up on piston and stack
assemblies creating friction and drag enough 
to time out motor
D. Replace piston and stack assemblies. Press
NEXT and REGEN buttons for 3 seconds to
resynchronize software with piston position 
or disconnect power supply from PC board 
for 5 seconds and then reconnect.
19. Err – 1007, Err – 107,
Err - 117 = MAV/
SEPS/NHBP/AUX
MAV valve motor ran
too short (stalled)
while looking for
proper park position
Motorized Alternating
Valve = MAV
Separate Source = SEPS
No Hard Water Bypass =
NHBP
Auxiliary MAV = AUX
MAV
A. Foreign material is lodged in 
MAV/NHBP valve
A. Open up MAV/NHBP valve and check piston
and seal/ stack assembly for foreign material.
Press NEXT and REGEN buttons for 3 seconds 
to resynchronize software with piston position 
or disconnect power supply from PC board for 
5 seconds and then reconnect.
B. Mechanical binding
B. Check piston and seal/stack assembly, check
reduction gears, drive gear interface, and
check MAV/NHBP black drive pinion on 
motor for being jammed into motor body. 
Press NEXT and REGEN buttons for 3 seconds
to resynchronize software with piston position
or disconnect power supply from PC board for
5 seconds and then reconnect.
PROBLEM CAUSE CORRECTION 
15










