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