tekmar 552 Thermostat Installation - Manual (Page 38)

© 2014 552_D - 09/14
38 of 44 A Watts Water Technologies Company
Error Message Description
SCENES MENU SAVE ERROR
The thermostat failed to read the Scenes menu settings from
memory and has reloaded the factory default settings. The
thermostat continues to operate normally while displaying this
error.
To clear the error, set the access level to Installer and check all
settings in the Scenes menu.
DISPLAY MENU SAVE ERROR
The thermostat failed to read the Display menu settings from
memory and has reloaded the factory default settings. The
thermostat continues to operate normally while displaying this
error.
To clear the error, set the access level to Installer and check all
settings in the Display menu.
tN2 PORT ERROR
The thermostat has been connected to a tN2 zone already in
use by a 2-stage zoning control. A 2-stage device requires two
tN2 ports to operate. This device may be connected to one
such port.
To clear the error, move the thermostat’s tN2 wires to an unused
tN2 port on the zoning control.
tekmarNet ® COMMUNICATION ERROR
The tekmarNet ® communication bus has either an open or a
short circuit. The result is that there are no communications.
Check for loose wires between tN4 and C. Check for short
circuits between the tN4 and C wires on the House Control,
Wiring Center, or Zone Manager. Check for correct polarity
between the C and R wires.
The error clears automatically once the wiring fault has been
corrected.
To force the error to clear while allowing a short or open circuit
to continue, touch the Cancel key.
ADDRESS ERROR
Two thermostats have been manually set to the same address.
The thermostat continues to operate with this error but does not
communicate with the tekmarNet
® system.
To clear this error, select an unused tekmarNet ® address or
select automatic addressing.
DEVICE LIMIT
More than 24 devices (thermostats or setpoint controls) have
been connected to the tekmarNet
® communication bus. To clear
the error, remove and relocate devices to other available buses
until the device count is 24 or less.
Error Messages (2 of 5)