tekmar 156 Difference Setpoint Control - Manual (Page 11)

11 of 12 © 2010 D 156 - 06/10
Item Field Range Description Actual Setting
ΔT
Source Maximum
Minimum
Storage ΔT • hours Diff’l
2 to 45°F
(1 to 25°C)
Default = 10°F
(6°C)
STORAGE MAXIMUM DIFFERENTIAL
This differential setting is used to prevent
short cycling of the pump when the
Storage temperature is near the Maximum
Storage Setpoint.
ΔT
Source Maximum
Minimum
Storage ΔT • hours Diff’l
°F, °C
Default = °F
UNITS
The units of measure that all of the
temperatures are to be displayed in the
control.
Program Menu (2 of 2)
After the last item, the control returns to the first item in the menu.
PROGRAM MENU
Error Messages
ΔT
Source Maximum
Minimum
Storage ΔT • hours Diff’l
EEPROM READ ERROR
The control was unable to read a piece of information from its EEPROM. This error
can be caused by a noisy power source. The control will load the factory defaults
and stop operation until all the settings are verified. To clear, view all items in the
PRGM menu.
ΔT
Source Maximum
Minimum
Storage ΔT • hours Diff’l
SOURCE SENSOR ERROR
The control is no longer able to read the Source Sensor due to an open or short circuit.
Locate and repair the problem as described in the Data Brochure D 085. The pump
will remain off until the error is cleared.
ΔT
Source Maximum
Minimum
Storage ΔT • hours Diff’l
STORAGE SENSOR ERROR
The control is no longer able to read the Storage Sensor due to an open or short circuit.
Locate and repair the problem as described in the Data Brochure D 070. The pump
will remain off until the error is cleared.