tekmar 664 Snow Detector & Melting Control Installation - Manual (Page 33)

33 of 36 © 2009 D 664 - 07/09
The control is no longer able to read the water detection circuit due to an open circuit. In this case, if the
control is currently in the Melting mode, the control will fi nish 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 7
and 8) 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.
The control is reading a heater malfunction. In this case, unless the yellow sensor becomes too hot, the
heater continues to try to operate. 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. Check the 090 heater circuit (red and black wires, terminals 6 and 7) according to the Data
Brochure D 090. Make sure the yellow and brown wires are not reversed. To clear the error message
from the control after the error has been repaired, press either the Menu or Item button.
The control is no longer able to read the slab sensor of zone 2 due to a short circuit. In this case, if the
control is currently in the Melting mode, the control will target a fi xed mixing water temperature until the
melting cycle is fi nished. 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 slab sensor of zone 2 due to an open circuit. In this case, if
the control is currently in the Melting mode, the control will target a fi xed mixing water temperature until
the melting cycle is fi nished. 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’s internal sensor is too hot (above 160°F (71°C)). In this case, the control will turn off the
heater in the Snow / Ice Sensor 090 until the control cools off. To clear the error message from the
control after the error has been repaired, press either the Menu or Item button.
This warning message will be displayed if the Slab 1 temperature does not increase to the SLB1 TRG
temperature while zone 1 is melting within a set time. The time limit is set using the NO HEAT item in
the MONITOR menu. To clear this warning, press either the Menu or Item button.
This warning message will be displayed if the Slab 2 temperature does not increase to the SLB2 TRG
temperature while zone 2 is melting within a set time. The time limit is set using the NO HEAT item in
the MONITOR menu. To clear this warning, press either the Menu or Item button.
664 Error Messages (3 of 3)
Error Displayed Description of Error