First EMV100 800 Series Manual page 73

Trouble-shooting guide
TROUBLE
Thermostat inoperative
Water cools down during
night
When pumps are active,
unpleasant noise in
installation is heard
Irrespective of the
temperatures, all pumps
are inoperative
Irrespective of the temp.,
collector pump is
continuosly switched on
and after-heating pump is
inoperative
Irrespective of the temp.,
after-heating pump is
continously switched on
and collector pump is
inoperative
Collector pump operates
normally and after heating
pump not
After-heating pump
operates normally and
collector pump not
Control light of individual
pump is on, but the pump
is inoperative
When "T1" key is pressed
Er1 appears
When "T1" key is pressed
Er2 appears
When "T2" key is pressed
Er1 appears
When "T2" key is pressed
Er2 appears
When "T3" key is pressed
Er1 appears
When "T3" key is pressed
Er2 appears
Er1 is shown on display
Er2 is shown on display
POSSIBLE FAILURE
Plug not connected
-Selector switch not in AUTO
position
-One of retaining valves
of the system inoperative
(enables thermosiohon water
circulation)
Retaining valve makes noise
(weak spring)
Selector switch in position
"OFF"
Temperature limit of hot water
tank too low
Selector switch in "ON1"
position
Selector switch in "ON2"
position
After-heating circuit discon-
nected
Collector circuit disconnected Connect collector circuit
Pump blocked or cable of the
pump interrupted
T1 sensor is interrupted
T1 sensor is short circuited
T2 sensor is interrupted
T2 sensor is short circuited
T3 sensor is interrupted
T3 sensor is short circuited
T4 sensor is interrupted
T4 sensor is short circuited
DTC 100/4 TD
REMEDY
Connect plug in socket
-Set the switch to AUTO
position-Check machine
installation. We recommend
installation of motor actuated
ball valve "EMV110 800/230.."
Replace nonreturn valve with
motor actuated ball valve
"EMV110 800/230.."
Set selector switch to AUTO
position Increase max.
temperature in hot water tank
(see: Temperature regulation
in hot water tank)
Set the switch to AUTO
position
Set selector switch to AUTO
position
Connect after-heating circuit
See: Settings
See: Settings
Check the pump and
connection to regulator
Check T1 sensor
Check T1 sensor
Check T2 sensor
Check T2 sensor
Check T3 sensor
Check T3 sensor
Check T4 sensor
Check T4 sensor
73
page