9
EUTECTIC EC-10 DV
ADJUSTING SETTINGS
To discourage unauthorized changing of Aquastat settings, a procedure
to enter the ADJUSTMENT mode is required. To enter the ADJUSTMENT
mode, press the UP, DOWN, and I buttons simultaneously for three sec-
onds. Press the I button until the feature requiring adjustment is dis-
played:
. HL_ . High Limit.
. LL_ . Low Limit. (L7224 only)
. Ldf . Low Limit Differential. (L7224 only)
. °F . °C.
.ELL_ External Low Limit (L7248L only)
Then press the UP and/or DOWN buttons to move the set point to the
desired value, to change between ÞF and CÞ, or to enable (On) or dis-
able (Off) the External Low Limit. After 60 seconds without any button
inputs, the control will automatically return to the RUN mode.
DISPLAY
In the RUN mode, the Aquastat will flash .bt. (boiler temp) followed by the
temperature (i.e., 220), followed by °F or °C.
To read boiler settings, press the I key to read the parameter of interest.
For example, press I High Limit
(HL) is displayed, followed by a three-digit number, i.e., 220, followed by
°F or °C. Pressing the I button again (on L7224 models) will display the
Low Limit (LL) followed by a three-digit number and the corresponding
degree designator.
After approximately 60 seconds without any key presses, the display will
enter a dim display mode. To return to the bright display mode, simply
press any key.
DESCRIPTION
Boiler Temperature –
High Limit –
Low Limit –
Low Limit Differential –
Local Thermostat Status –
Enviracom Thermostat Status –
Error Code –
Degrees Fahrenheit –
Degrees Celsius –
Error Code
Cause/Action
Err1
Sensor fault; check sensor.
Err2
ECOM fault; check EnviraCOM
™
wiring
Err3
Hardware fault; replace control.
Err4
B1 fault; check B1 wiring/voltage.
Err5
Low Line; Check L1-L2, 110 Vac.
Err6
Fuse; Check ECOM wires, replace fuse.
Err7
EEPROM, HL, LL, Hdf, Ldf: reset to
deault values. Restore desired settings.
Err8
Repeated B1 fault (no voltage present
at B1 when output is turned on water
temperature above 260F when voltage
present at B1); check B1 wiring/voltage.
FOR L7248L
