Section 4
Troubleshooting
Error Messages
E01
The controller was unable to read a piece of
information stored in its memory and was required
to load the factory settings. The controller 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.
(See
Figure 22
.)
E02
There are no active sensors selected on the
controller. Either turn on the internal sensor or
set the auxiliary sensor to INDR or SLAB. After
correcting the fault, press any button to clear
the error message. (See
Figure 23
.)
ROOM Shr
The controller’s internal air sensor has a short
circuit. This error cannot be repaired in the field.
Replace or return the controller for repair.
(See
Figure 24
.)
ROOM OPN
The controller’s internal air sensor has an open
circuit. This cannot be repaired in the field.
Either turn off the internal sensor and set an
auxiliary sensor to INDR, or replace the controller
and return the faulty controller for repair. After
correcting the fault, press any button to clear
the error message. (See
Figure 25
.)
11
Section 4 — Troubleshooting
Figure 22
Figure 23
Figure 24
Figure 25
ROOM HEAT
This displays the desired temperature for heating
(must set active air sensor to Heat or Auto).
(See
Figure 15
.)
35 to 100°F (2 to 38°C)
SLAB MIN (501s Only)
This displays the minimum slab or floor
temperature (one active slab sensor required).
(See
Figure 16
.)
OFF, 34 to 122°F (OFF, 1 to 50°C)
SLAB MAX (501s Only)
This displays the maximum slab or floor
temperature (one active air sensor required).
This is only available when in the Installer access
level. (See
Figure 17
.)
34 to 122°F, OFF (1 to 50°C, OFF)
SENS (501s Only)
This selects the type of optional sensor present
(only available in the Installer access level).
(See
Figure 18
.)
OFF, Indr, SLAB, OUT
ROOM SENS (501s Only)
This enables or disables the built-in sensor
(only available in the Installer access level).
(See
Figure 19
.)
OFF, ON
CYC HEAT (501s Only)
This displays the number of cycles per hour
for heating (only available in the Installer access
level). (See
Figure 20
.)
AUTO, 2 to 12
UNITS
This displays the units of temperature used.
(See
Figure 21
.)
°F, °C
10
Figure 16
Figure 17
Figure 18
Figure 19
Figure 20
Figure 21
Figure 15