tekmar 667 Snow Detector & Melting Control - Manual (Page 25)

25 of 28 © 2002 D 667 - 09/02
The control is no longer able to read the mixing return sensor due to a short circuit. If the ∆T MAX item is
set to OFF, the control will continue to operate as if the as if the mixing return sensor was not connected
to the control. If the
∆T MAX item is not set to OFF, the control does not operate the snow melting system.
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 either the Menu or Item button.
The control is no longer able to read the mixing return sensor due to an open circuit. If the
∆T MAX item
is set to OFF, the control will continue to operate as if the mixing return sensor was not connected to
the control. If the
∆T MAX item is not set to OFF, the control does not operate the snow melting system.
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 either the Menu or Item button.
The control is no longer able to read the boiler sensor due to a short circuit. If the Boil MIN item is set
to OFF, the control operates the boiler contact when the mixing device starts to operate. If the Boil MIN
is not set to OFF, the control does not operate the snow melting system. 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 either the Menu or Item button.
The control is no longer able to read the boiler sensor due to an open circuit. If the Boil MIN item is set
to OFF, the control operates the boiler contact when the mixing device starts to operate. If the Boil MIN
is not set to OFF, the control does not operate the snow melting system. Locate and repair the problem
as described in the Data Brochure D 070. If the boiler sensor was deliberately not installed, set the Boil
SENS item to NONE. To clear the error message from the control after the sensor has been repaired,
press either the Menu or Item button.
The control is no longer able to read the slab sensor due to a short circuit. In this case, if the control is
currently in the Melting mode, the control will target a fixed mixing water temperature until the melting
cycle is finished. Locate and repair the problem as described in the Data Brochure D 079 or D 090. To
clear the error message from the control after the sensor has been repaired, press either the Menu or
Item button.
The control is no longer able to read the slab sensor due to an open circuit. In this case, if the control is
currently in the Melting mode, the control will target a fixed mixing water temperature until the melting
cycle is finished. Locate and repair the problem as described in the Data Brochure D 079 or D 090. To
clear the error message from the control after the sensor has been repaired, press either the Menu or
Item button.
The control is no longer able to read the yellow sensor due to a short circuit. In this case, the control
will turn off the heater in the Snow / Ice Sensor 090. Check the 090 yellow temperature sensor (black
and yellow wires, terminals 4 & 6), and the wiring from the terminal plug to the sensor. To clear the error
message from the control after the sensor has been repaired, press either the Menu or Item button.
The control is no longer able to read the yellow sensor due to an open circuit. In this case, the control
will turn off the heater in the Snow / Ice Sensor 090. Check the 090 yellow temperature sensor (black
and yellow wires, terminals 4 & 6), and the wiring from the terminal plug to the sensor. To clear the error
message from the control after the sensor has been repaired, press either the Menu or Item button.
The control is no longer able to read the water detection circuit due to a short circuit. In this case, if the
control is currently in the Melting mode, the control will finish the snow melting cycle. The snow melting
system can only be operated using an external melt demand, Remote Display Module 040, Remote
Start / Stop Module 039 or the Start button on the control. Otherwise, the control will operate as if the
Snow / Ice Sensor 090 is dry. Check the 090 water detection circuit (black and blue wires, terminals
4 & 5) according to the Data Brochure D 090. To clear the error message from the control after the error
has been repaired, press either the Menu or Item button.
667 Error Messages (2 of 3)
The control is no longer able to read the mixing supply sensor due to an open circuit. In this case, the
control does not operate the snow melting system. 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 either the Menu or Item button.
Error Displayed Description of Error