© 2010
D 508 - 05/10
10 of 12
Error Messages
E01
The thermostat was unable to read a piece of information stored
in its memory. The thermostat was required to load the factory
settings. The thermostat will stop operation until all settings are
checked. To clear this error, select the Installer access level and
check all of the settings in the Adjust menu.
E02
There are no active sensors selected on the thermostat. Either the
internal sensor must be turned on or the auxiliary sensor must be
set to either INDR or SLAB. After the fault is corrected, press any
button to clear the error message.
ROOM SHORT
The thermostat’s internal air sensor is short circuit. This cannot
be repaired in the field. The thermostat should be replaced or
returned for repair.
ROOM OPEN
The thermostat’s internal air sensor is open circuit. This cannot be
repaired in the field. Either turn off the internal sensor and use an
auxiliary sensor set to INDR or replace the thermostat. After the
fault is corrected, press any button to clear the error message.
SENSOR SHORT
The auxiliary sensor is short circuit. Locate and repair the problem
as described in the appropriate sensor brochure. After the fault is
corrected, press any button to clear the error message.
SENSOR OPEN
The auxiliary sensor is open circuit. Locate and repair the problem
as described in the appropriate sensor brochure. After the fault is
corrected, press any button to clear the error message.
Schedule Menu
AWAY OVERRIDE
Selects an automatic setback temperature of 62°F (16.5°C) without
altering the normal room temperature setting (Slab minimum is
ignored). Select between None & Away.
Summary of Contents for D 508
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