Instruction manual

52
TROUBLESHOOTING
Error Codes
“-- -- ” -- If Thermidistat Control cannot properly read room temperature, display
will indicate “---- ” and all outputs (except fan, if on) will turn off. In the case
where the installer has selected to average the local sensor and the remote room
sensor, the Thermidistat display will alternate between “----” for the failed sensor
and the temperature sensed by the working sensor every 10 seconds. The control
will operate from the temperature sensed by the working sensor.
E1 -- If the Display Module and the Equipment Control Module cannot
communicate via two--wire connection, an E1 will be displayed.
E2 --ThereisnoE2errormessage.
E3 -- If Thermidistat Control cannot properly read outdoor temperature, and it is
needed for proper operation, display will indicate “ ----” in the outdoor
temperature location.
E4 -- If Thermidistat Control’s internal memory fails, E4 will be displayed.
Replace Thermidistat Control.
E5 -- If Thermidistat Control cannot properly read humidity, E5 will be
displayed. Replace Thermidistat Control. If both Humidify and Dehumidify
have been set to OF, the humidity value will be shown as “---- ” when viewed
from the humidity menu, but no E5 will be shown in the display.
Table 4 can be used as a troubleshooting tool for determining which outputs will
be active for a particular configuration and each operating mode.