After 168 hours, Mhtc service warning/fault, 7 days) – Nortec MH Series User Manual

Page 64

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61 | Maintenance and Servicing

MHTC Service Warning/Fault

The MHTC controller includes a timer that monitors operating hours and generates a warning
when service is required or the UV lamp needs to be replaced. Optimal maintenance time is
dependent on water supply conditions and usage. The default factory service reminder is
equivalent to 800 hours of operation at 100% output. Failure to perform maintenance when
the service warning is displayed will cause the unit to lock out. Nortec is not responsible for any
damages resulting from, or attributed to not performing required maintenance. (see
Manufacturer’s Warranty).

Warning
When the MHTC software
determines that the service timer
or UV lamp life has elapsed it first
displays a warning and turns on
the yellow service LED. The
MHTC will continue to operate for
another 168 hours after the
warning is displayed.




Fault
After 168 hours the MHTC will
display a fault and shut down.
If maintenance is not possible the
MHTC can be temporarily put
back into service by turning the
MHTC off and on. The MHTC will
run for another 168 hours.
This reset can be repeated 4
times after which the MHTC will
not run until the Stage Reset
function is entered in the
software’s Maintenance Menu.

Figure 47: Service Warning / Fault







NOTE:
 If the “Stage Reset” service reminder is not reset the MHTC may fault out on the

W28 Maintenance Fault despite the fact that the maintenance has been

performed.

 After performing the first maintenance on the MHTC it is possible to increase or

decrease the service period to match water and air conditions. If the media and

drain pan are relatively clean and free of dirt and scale increase the service

period. If there is a lot of scale or the media looks dirty then from dirt and dust

then reduce the service period and consider increasing cleaning cycles (See MHTC

Configuration)

Service LED On

+

W28 Maintenance =

Service timer has

expired and MHTC

needs maintenance.

or

W29 UV Maintenance =

UV Lamp lifespan reached.

MHTC continues to

operate.

Menu

Info

Fault LED On

+

E28 Maintenance =

Service timer + 168 hours

has passed. Maintenance

must be performed.

or

E29 UV Maintenance =

UV Lamp lifespan +168 hours

has passed.

MHTC has

shut down.

Menu

Info

Warning

W28 Maintenance
W29 UV Maintenance

Standby

!

Error

E28 Maintenance

Protected

!

After 168 Hours

(7 days)

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