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2012 274_D
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11/12
42
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44
Error Message
Description
VIEW
SCHEDULE MASTER ERROR
More than one tN4 device has been assigned the same master number.
VIEW
BOILER SUPPLY SENSOR SHORT CIRCUIT
Due to a short circuit, the control failed to read the boiler supply sensor. When there is a call
for heat, the control no longer controls the boiler(s). Instead, the control provides a boiler
enable to the boiler’s aquastat or boiler control until the sensor is repaired. The control will
not operate the boiler contact if the Boil Minimum setting is less than 100°F (38.0°C). Locate
and repair the problem as described in the Data Brochure D 070. The error message self
clears once the error condition is corrected.
VIEW
BOILER SUPPLY SENSOR OPEN CIRCUIT
Due to an open circuit, the control failed to read the boiler supply sensor. The control no longer
controls the boiler. Instead, the control provides a boiler enable to the boiler’s aquastat or boiler
control until the sensor is repaired. The control will not operate the boiler contact if the Boil
Minimum setting is less than 100°F (38.0°C). Locate and repair the problem as described in
the Data Brochure D 070. The error message self clears once the error condition is corrected
Note:
If you deliberately remove the boiler supply sensor, power down for 10 seconds then
restart the control.
VIEW
OUTDOOR SENSOR SHORT CIRCUIT
Due to a short circuit, the control failed to read the outdoor sensor. As a result, the control
assumes an outdoor temperature of 32°F (0.0°C) and continues operation. Locate and repair
the problem as described in the Data Brochure D 070. The error message self clears once
the error condition is corrected.
VIEW
OUTDOOR SENSOR OPEN CIRCUIT
Due to an open circuit, the control failed to read the outdoor sensor. As a result, the control
assumes an outdoor temperature of 32°F (0.0°C) and continues operation. Locate and repair
the problem as described in the Data Brochure D 070. The error message self clears once
the error condition is corrected.
VIEW
DEVICE SCHEDULE ERROR
The selected system schedule is no longer available. Either the system schedule master is
no longer connected to the network or the system schedule number has been changed on
the schedule master. The error message self clears once the error condition is corrected.
VIEW
DEVICE ERROR AT ADDRESS #:##
#.## is the address of the device with the error. The bus number displays before the colon,
and the device number display after. Go to the device with the address displayed.
Possible Addresses:
b:01
to
b:24
- Device Error on Boiler Bus
VIEW
DHW SHORT CIRCUIT
Due to a short circuit, the control failed to read the DHW sensor. As a result, the control no
longer heats the DHW tank. Locate and repair the problem as described in the Data Brochure
D 070. DHW tank heating will resume once the sensor problem is corrected. The error message
self clears once the error condition is corrected.
VIEW
DHW OPEN CIRCUIT
Due to an open circuit, the control failed to read the DHW sensor. As a result, the control no
longer heats the DHW tank. Locate and repair the problem as described in the Data Brochure
D 070. DHW tank heating will resume once the sensor problem is corrected. The error message
self clears once the error condition is corrected.
Error Messages (2 of 3)