Intelligent System Solutions® STEAM ● AIR ● HOT WATER
armstronginternational.com
Armstrong Hot Water, Inc. – DRV40-80 Gen. 2 Troubleshoot Guide
221 Armstron
Blvd.
Three Rivers
Michi
an 49093
U.S.A. Phone:
269
27
3602
Fax:
269
27
3130
Motor Error/Safe Mode
Has the valve been reset
i.e.
owered off
then on
?
Check
Yes
No
Reset the valve by
powering down & then
owerin
back on
Are the valve internals free
of debris and clean?
No
Remove valve internals
and thorou
hl
clean
No
Remove valve internals &
check O-rings/Seals to
ensure they are smooth;
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
lace moto
No
Check strength of
magnets inside rotor; if
not sufficient, replace
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
ualize
ressures
Yes
Is the valve PCB
operational and ok?
No
Re
lace Ele. Housin
Yes
Is the valve PSU
operational and ok?
No
Re
lace Ele. Housin
Yes
Issue addressed or Contact
Factory @ 269-279-3602
Are all cables/wiring &
connectors ok?
Re
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
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