Nortec MH Series User Manual
Page 80
77 | Troubleshooting
Code
Display
Message
LED
System Detected
Cause
Corrective Action(s)
W36A Stage
Hygene --
Cleaning of
media boxes in
progress
1 Cleaning cycle in
progress
1 None, normal
operation.
W37A Tank
Draining --
Draining of tank
in progress
1 Tank drain in progress
1 None, normal
operation.
W40A
No W-pressure
Red
Flash
No supply water
pressure
(Reflow Only)
1 Water supply blocked /
shut off
1 Check shut off valve,
filter, pipes, etc.
2 Water treatment
system regenerating
2 Install relay to interrupt
MH safety loop while
system regenerates.
E40A
Red
3 Low water pressure
3a Check filter
3b Check for leaks in
supply line.
3c Check supply water
pressure