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Armstrong International
Parc Industriel Des Hants-Sarts, 2ème Avenue No. 4, Haerstal, B-4040, Belgium
armstronginternational.com/brain
Troubleshooting
Contents
DRV40 Display Errors ................................................................................58
Common Faults
“Blend temperature rises when system is in zero demand” .............. 61
“Outlet temperature uctuates more than ± 2°C”. .............................. 62
“LCD Display shows any of the following” ..........................................63
“Blend circuit does not fully return to normal within the
Disinfection Timeout period” ..............................................................64
“Constant difference between blend circuit temperature reading
and DRV40 temperature display” .......................................................65
“Unable to adjust outlet temperature” ................................................. 66
“No display” ............................................................................................67
“No display or no control” ....................................................................67
“Cannot read the LCD display” .............................................................68
“High pitched noise from DRV40” ........................................................69
“Water leaking from DRV40” .................................................................70
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