37
ECOTHERM
Heat transfer solutions
®
Operating Instructions High Capacity Water Heaters Models EHRE/EHPE & EDRE - ELC 11
nr.
Display
reason for the fault
rectification
a 001
Heating flow too high!
the alarm control is started at the
operating condition „HeatinG“ and
tripped if the temperature at t4
increases over the maximum value.
the systems turnes off and goes
finally in operation if the hot water flow
temperature sinks at 5° C below the
limit value.
Contoll of the function of
the heat supply
a 002
Heating flow too low!
the alarm control is started at the
operating condition „HeatinG“ and
tripped if the temperature at t4 does
not reach the start-up to-be value of
the water pump after 120 minutes.
the system remains in operation and
the alarm is still shown on the display
if the heating flow increases and the
system charges.
Controll of the function of
the heat supply
a 003
a 004
fault primary pump!
fault secondary pump!
supervision of the thermal contact of
the pumps (if plugged)
Controll of the connection
of the thermal contacts
respectively pump function
a 005
a 006
a 007
a 008
a 009
failure sensor t1!
failure sensor t2!
failure sensor t3!
failure sensor t4!
failure sensor t5!
failure messages if the temperature
sensor is deffect or not connected
Controll the correct
connection respectively
function of the relative
sensor
a 010
a 011
a 012
a 017
Pollution warning!
Pollution alarm 1!
Pollution alarm 2!
Pollution alarm 3!
Differential pressure too high.
a remaining operating time of 10
hours continuous after appearance
of the alarm. Within these 10 hours
or even afterwards the alarm can be
quitted. after acknowledgment there
are still 60 hours remaining operating
time at disposal (Operating hours).
request service
acknowledgment with the
violett button in the pollution
control
a 013
a 014
Run-time error flush valve Open!
Run-time error flush valve
Closed!
supervision of the final switch of the
flush valves V1 and V2 of the external
excale
Controll of the connectioon
of the final switches of the
flush valves
a 015
flow controll error!
At non-operating state the differental
pressure has to be between -50 and
-100 (Normal case -10 to 10)
Controll of the differential
pressure indicator
a 016
stB tripped
only at steam!
Controll of the safety
temperature sensor
Control unit
