tekmar 275 Boiler Control - Manual (Page 45)

45 of 48 © 2012 275_D - 11/12
To Enable Zone Test:
1. Press and hold the Test button for more than 6 seconds.
The control displays ZONE TEST OFF and the Test LED
remains on.
Test Press and Hold
for 6 seconds
2. Press the Up button to change the display to ZONE
TEST ON. After 3 seconds, the boiler and all pumps
are shut off.
3. The control operates stage one of the tN4 device with
the lowest address number. Device number one (b:01)
has the lowest address number and device 24 (b:24)
has the highest address number. All other tN4 zones
are shut off.
4. Pressing the Up button will turn off stage 1, and turn on
stage 2 of the same device (if that device has a second
stage) or turn on stage 1 of the device with the next lowest
address. The Down button can be pressed to move to a
device with a lower address number. The second stage
of a two stage zone is indicated with a small 2 in the
display.
5. The Up and Down buttons can then be used to move
through the devices and the heating stages of each
device on the boiler bus.
To cancel the Zone Test press the Test button. Once the
Zone Test ends or is cancelled, the control resumes normal
operation.
Error Message Description
VIEW CONTROL ERROR ADJUST
The control failed to read the Adjust Menu settings, and reloaded the factory default settings.
Operation stops until you check all the Adjust Menu settings.
Note: To clear the error, the access level must be set to Advanced and the settings in the
Adjust menu must be checked.
VIEW CONTROL ERROR TIME
The control failed to read the Time Menu settings, and reloaded the factory default settings.
Operation continues normally.
Note: To clear the error, the access level must be set to Advanced and the settings in the
Time menu must be checked.
VIEW CONTROL ERROR SCHEDULE
The control failed to read the Schedule Menu settings, and reloaded the factory default
settings. Operation continues normally.
Note: To clear the error, the access level must be set to Advanced and the settings in the
Schedule menu must be checked.
VIEW CONTROL ERROR MISCELLANEOUS
The control failed to read the Miscellaneous Menu settings, and reloaded the factory default
settings. Operation continues normally.
Note: To clear the error, the access level must be set to Advanced and the settings in the
Miscellaneous menu must be checked.
VIEW
TN4 BUS ERROR
Communication has been lost on the boiler bus due to a short or open circuit. Check the tN4,
C and R wires for each tN4 device. Check the polarity of the C and R wires. Check for loose
or broken wires. The error message self clears once the error condition is corrected.
To clear the error code, press and hold the up and down buttons together for 5 seconds while
viewing this error message.
VIEW
DEVICE LOST
Communication is lost to a tekmarNet
® device on the boiler bus. The number shown is the
address of the lost device. The LCD on the lost device displays the tekmarNet ® communication
symbol and OPEN. Ensure that there is power to the lost device. Trace the wires from the
control to the lost device looking for loose or damaged wires. The error message self clears
when the error condition is corrected.
Note: If you deliberately remove a tekmarNet
® device, hold the up and down buttons together
for 5 seconds to clear the error.
VIEW
MASTER DEVICE ERROR
More than one tN4 System Control has been detected on the tN4 bus. This generally indicates
that two tN4 buses are wired together. Check the tN4 bus wiring. The error message clears
once the error condition is corrected.
Error Messages (1 of 3)