Error/Alarms And Troubleshooting - Raychem HWAT-ECO Mode D'emploi

3.3.6 Info
0 Software: Firmware version
1 Cable Type: Shows selected cable type
2 Boiler T: Shows temperature of external sensor. Press Enter twice to
update the sensor temperature.
3 Internal T: Shows internal temperature of the unit
4 Display Legionella log: Press ENTER to view a log of the legionella pro-
gramming. A maximum of 99 legionella events are saved and can be
reviewed here. Format day: month:year: number of legionella hours
5 Test program: This program can be used to test the heating cable. For
a maximum of 30 minutes after switching the test program on, the cable
will be heated. After 30 minutes or after pressing ESC the normal pro-
gramming will resume automatically.

4. ErrOr/ALArMS AND TrOUBLESHOOTING

Indication
trace boiler LED
" " on
!
esc
01.01.2007 00:00
(flashing on display)
ERROR 1
(buzzer beeping
simultaniously;
and error LED
" " on)
!
ERROR 2
esc
(buzzer beeping
simultaniously;
and error LED
" " on)
!
esc
22
Cause / reason
boiler temperature lower
than maintain temp.
HWAT-ECO
Empty lithium battery
internal temperature of
HWAT-ECO higher than
85°C
boiler temperature too high
sensor has not been
installed
sensor or sensor cable
defect (only when trace
boiler "On" selected)
remedy
– check boiler temperature
(also indicated in INFO of
HWAT-ECO menu, chapter
3.3.6)
– check maintain tempera-
ture setting at HWAT-ECO
– check temperature sensor
mounting
replace battery (type 2025)
switch off or disconnect
power supply and contact
Tyco Thermal Controls
representative
lower boiler temperature
connect sensor to
HWAT-ECO or set program
Trace boiler OFF
check sensor connections
replace sensor check
temperature sensor mounting