Armstrong DRV40 User manual

Intelligent System Solutions® STEAM ●AIR ●HOT WATER
armstronginternational.com
Armstrong Hot Water, Inc. – DRV40-80 Gen. 2 Troubleshoot Guide
221 Armstron
g
Blvd.
,
Three Rivers
,
Michi
g
an 49093
–
U.S.A. Phone:
(
269
)
27
9
-
3602 Fax:
(
269
)
27
9
-
3130
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Motor Error/Safe Mode
Has the valve been reset
(
i.e.
p
owered off
,
then on
)
?
Check
Yes
No Reset the valve by
powering down & then
p
owerin
g
back on
Are the valve internals free
of debris and clean?
No
Remove valve internals
and thorou
g
hl
y
clean
No
Remove valve internals &
check O-rings/Seals to
ensure they are smooth;
if not, replace
Are the O-Rings/Seals in
good condition & not
preventing the spool travel?
Is the motor operational?
(i.e. is it able to turn/drive
gears?)
Yes
Yes
Yes
Is the magnetic rotor
attached to the motor
operational?
No
Re
p
lace moto
r
No
Check strength of
magnets inside rotor; if
not sufficient, replace
rotor
Yes
Is the valve free of any
leaks coming out of bottom
of valve?
No
Ensure all wires are not
pinched & plugs are
connected; if needed
replace cable loom
Yes
Are supply pressures
nominally equal (within
5psi
)
?
No E
q
ualize
p
ressures
Yes
Is the valve PCB
operational and ok? No Re
p
lace Ele. Housin
g
Yes
Is the valve PSU
operational and ok? No Re
p
lace Ele. Housin
g
Yes
Issue addressed or Contact
Factory @ 269-279-3602
Are all cables/wiring &
connectors ok?
Re
p
lace GDA
No
Yes
Key:
PSU = Power Supply GDA = Gear Drive Assembly
PCB = Printed Circuit Board
Yes
No
Is the front electronics
enclosure closed? Close door fully against
valve bod
y

Intelligent System Solutions® STEAM ●AIR ●HOT WATER
armstronginternational.com
Armstrong Hot Water, Inc. – DRV40-80 Gen. 2 Troubleshoot Guide
221 Armstron
g
Blvd.
,
Three Rivers
,
Michi
g
an 49093
–
U.S.A. Phone:
(
269
)
27
9
-
3602 Fax:
(
269
)
27
9
-
3130
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PCB Error
Has the valve been reset
(
i.e.
p
owered off
,
then on
)
?
Check
Yes
No Reset the valve by
powering down & then
p
owerin
g
back on
Is the software/firmware
version 9 or greater? No If has BrainScan, replace
Ele. Housing
No
Ensure all wires are not
pinched & plugs are
connected; if needed
re
p
lace cable loom
Are all cables/wires &
connectors ok?
Yes
Yes
Yes
No Replace Ele. Housing
No Re
p
lace Ele. Housin
g
Is the valve PCB
operational and ok?
Is the valve PSU
operational and ok?
Yes
Issue addressed or Contact
Factory @ 269-279-3602
Thermistor Error
Has the valve been reset
(
i.e.
p
owered off
,
then on
)
?
Check
Yes
No Reset the valve by
powering down & then
p
owerin
g
back on
No
No
Ensure all wires are not
pinched & plugs are
connected; if needed
re
p
lace cable loom
Are all cables/wires &
connectors ok?
Yes
Yes
Yes
No Replace Ele. Housing
Re
p
lace cable loom
Are the thermistors
operational and ok?
Is the valve PCB
operational and ok?
Issue addressed or Contact
Factory @ 269-279-3602
Key:
PSU = Power Supply GDA = Gear Drive Assembly
PCB = Printed Circuit Board

Intelligent System Solutions® STEAM ●AIR ●HOT WATER
armstronginternational.com
Armstrong Hot Water, Inc. – DRV40-80 Gen. 2 Troubleshoot Guide
221 Armstron
g
Blvd.
,
Three Rivers
,
Michi
g
an 49093
–
U.S.A. Phone:
(
269
)
27
9
-
3602 Fax:
(
269
)
27
9
-
3130
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Battery Error
Has the valve been reset
(
i.e.
p
owered off
,
then on
)
?
Check
Yes
No Reset the valve by
powering down & then
p
owerin
g
back on
Have the batteries been
replaced within last year? No Re
p
lace Batteries
No
Ensure all wires are not
pinched & plugs are
connected
Are all cables/wires &
connectors ok?
Yes
Yes
Yes
No Replace Ele. Housing
No Re
p
lace Ele. Housin
g
Is the valve PCB
operational and ok?
Is the valve PSU
operational and ok?
Yes
Issue addressed or Contact
Factory @ 269-279-3602
Display Issues
Has the valve been reset
(
i.e.
p
owered off
,
then on
)
?
Check
Yes
No Reset the valve by
powering down & then
p
owerin
g
back on
No
No
Adjust brightness via
POT adjustment screw on
PCB
Is the lighting/brightness
sufficient?
Yes
Yes
Replace display & keep
original to allow for a
spare in event heat
affects a
g
ain
Is the display
numerals/characters ok?
Issue addressed or Contact
Factory @ 269-279-3602
Key:
PSU = Power Supply GDA = Gear Drive Assembly
PCB = Printed Circuit Board

Intelligent System Solutions® STEAM ●AIR ●HOT WATER
armstronginternational.com
Armstrong Hot Water, Inc. – DRV40-80 Gen. 2 Troubleshoot Guide
221 Armstron
g
Blvd.
,
Three Rivers
,
Michi
g
an 49093
–
U.S.A. Phone:
(
269
)
27
9
-
3602 Fax:
(
269
)
27
9
-
3130
Yes
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Temperature Control Issues
Has the valve been reset
(
i.e.
p
owered off
,
then on
)
?
Check
Yes
No Reset the valve by
powering down & then
p
owerin
g
back on
Has the valve been re-
calibrated? No Calibrate valve
No
Isolate recirculation;
create sufficient demand
(10gpm min.) & check
performance
Does the valve control
under minimum demand?
Does the system have
sufficient recirculation flow
(10gpm min.)?
Yes
Yes
Yes
Are supply pressures
nominally equal (within
5psi)?
No
Check recirculation
pump rating; ensure is
capable and running at
min. of 10gpm; if not,
increase pump size
No E
q
ualize
p
ressures
Yes
Does the system have
sufficient recirculation loop
temperature loss (2deg
min
)
?
No
Reduce size of
recirculation pump or
slow down flow
Yes
Is there adequate supply
water temperatures (hot &
cold su
pp
l
y)
No
Ensure hot water
supply is > than valve
setpoint (min. 2deg F) &
cold water supply is <
than valve setpoint
(min. 2deg F)
Are the valve internals free
of debris and clean?
No
Remove valve internals
and thoroughly clean
Yes
Does the recirculation
pump run continuously
without an Aquastat?
No
Remove aquastat;
recirculation pump
should run continuousl
y
Yes
Are the O-Rings/Seals in
good condition & not
preventing the spool
travel?
Yes
No
Remove valve internals
& check O-rings/Seals
to ensure they are
smooth; if not, replace
Is the spool lock nut on the
drive shaft tight preventing
any spool slop?
Tighten lock nut to 80-90
in-lb
No

Intelligent System Solutions® STEAM ●AIR ●HOT WATER
armstronginternational.com
Armstrong Hot Water, Inc. – DRV40-80 Gen. 2 Troubleshoot Guide
221 Armstron
g
Blvd.
,
Three Rivers
,
Michi
g
an 49093
–
U.S.A. Phone:
(
269
)
27
9
-
3602 Fax:
(
269
)
27
9
-
3130

Are there strainers in the
system & if so are they
clean?
Install strainers on ALL
supply lines & remove
basket (not just blow
down
)
to clean
Is the valve installed/piped
according to installation
instructions?
No
Re-pipe to ensure
installed per instructions
Yes
No
Yes
Issue addressed or Contact
Factory @ 269-279-3602
Is the valve installed in a
single temperature
loop/system (i.e. no high
tem
p
kitchen loo
p
s
)
?
Yes
No
Ensure there are no
cross-connections w/
any higher/lower temp
loops
Yes
Are the checkvalves
installed holding correctly? Re
p
lace checkvalves
No
Yes
Temperature Control Issues Cont’d