Error messages (2 of 2) – tekmar 279 Steam Control User Manual

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Error Messages (2 of 2)

ROOM 1 SHORT CIRCUIT
The room 1 short circuit error message causes the Alert 2 Low relay to turn on.
The control is no longer able to read the indoor sensor 1 due to a short circuit. In this case
the control will continue operation using indoor sensor 2. If indoor sensor 2 is not available,
then the control operates without using indoor temperature feedback. Locate and repair the
problem as described in the Data Brochure D 076, D 077, or D 084. To clear the error message
from the control after the sensor has been repaired, press any button.

ROOM 1 OPEN CIRCUIT
The room 1 open circuit error message causes the Alert 2 Low relay to turn on.
The control is no longer able to read the indoor sensor 1 due to an open circuit. In this case
the control will continue operation using indoor sensor 2. If indoor sensor 2 is not available,
then the control operates without using indoor temperature feedback. Locate and repair the
problem as described in the Data Brochure D 076, D 077, or D 084. To clear the error message
from the control after the sensor has been repaired, press any button.
If indoor sensor 1 was removed on purpose, set the Indoor S1/Off switch to Off.

ROOM 2 SHORT CIRCUIT
The room 2 short circuit error message causes the Alert 2 Low relay to turn on.
The control is no longer able to read the indoor sensor 2 due to a short circuit. In this case
the control will continue operation using indoor sensor 1. If indoor sensor 1 is not available,
then the control operates without using indoor temperature feedback. Locate and repair the
problem as described in the Data Brochure D 076, D 077, or D 084. To clear the error message
from the control after the sensor has been repaired, press any button.

ROOM 2 OPEN CIRCUIT
The room 2 open circuit error message causes the Alert 2 Low relay to turn on.
The control is no longer able to read the indoor sensor 2 due to an open circuit. In this case
the control will continue operation using indoor sensor 1. If indoor sensor 1 is not available,
then the control operates without using indoor temperature feedback. Locate and repair the
problem as described in the Data Brochure D 076, D 077, or D 084. To clear the error message
from the control after the sensor has been repaired, press any button.
If indoor sensor 2 was removed on purpose, set the Indoor S2/Off switch to Off.

DHW EXCHANGE SHORT CIRCUIT
The DHW exchange sensor short circuit error message causes the Alert 2 Low relay to turn on.
The control is no longer able to read the DHW tankless coil sensor due to a short circuit. In this
case the control does not operate the steam boiler for tankless coil domestic hot water. Locate
and repair the problem as described in the Data Brochure D 070. To clear the error message
from the control after the sensor has been repaired, press any button.

DHW EXCHANGE OPEN CIRCUIT
The DHW exchange sensor open circuit error message causes the Alert 2 Low relay to turn on.
The control is no longer able to read the DHW tankless coil sensor due to an open circuit. In
this case the control does not operate the steam boiler for tankless coil domestic hot water.
Locate and repair the problem as described in the Data Brochure D 070. To clear the error
message from the control after the sensor has been repaired, press any button.
If the DHW tankless coil sensor was removed on purpose, set the DHW Tankless Coil Sensor/
Off switch to Off.

NO HEAT
The no heat error message causes the Alert 1 High relay to turn on.
One of the indoor sensors has measured a temperature below 38°F (3.5°C). To clear the
error message from the control, press any button after the indoor sensor temperature has
exceeded 38°F (3.5°C).