STIEBEL ELTRON HDB-E Si с 01.02.2013 - Manual (Page 28)

28 | HDB-E Si www.stiebel-eltron.com
InStallatIOn
troubleshooting
13. troubleshooting
WARNING Electrocution
In order to check the appliance. it must be supplied
with power.
13.1 display options for led diagnostic traffic light
possible indications
Red Illuminates in case of faults
Yellow Illuminates in heating mode
Green Flashing: appliance is supplied with
mains power
13.2 Fault table
Fault / diagnostic traffic light lED display Cause Remedy
The appliance does not start. The shower head / aerators are scaled up. Descale or if necessary replace the shower head /
aerators.
Inadequate flow rate. The sieve in the appliance is dirty. Clean the strainer.
The temperature is not achieved. One phase down. Check the MCB/fuse in your fuse box.
The heater does not switch on. The air sensor detects the presence of air in the
water and briefly switches the heater off.
The appliance restarts after one minute.
No hot water and no traffic light display. The MCB/fuse has responded/blown. Check the MCB/fuse in your fuse box.
The safety pressure limiter (see chapter “Specifica-
tion / Wiring diagram” has switched off.
Remove the cause of the fault (e.g. faulty pressure
washer).
Protect the heating system against overheating by
opening a draw-off valve downstream from the ap-
pliance for one minute. This depressurises and cools
down the heater. Activate the safety pressure limiter
at flow pressure by pressing the reset button; see
also chapter “Commissioning”.
The PCB is faulty. Check the PCB and replace if necessary.
No hot water at flow rate of > 23 l/min.
Traffic light display: green flashing.
The PCB is faulty. Check the PCB and replace if necessary.
The flow sensor is not plugged in. Plug the flow sensor plug back in.
The flow sensor is faulty. Check the flow sensor and replace it if required.
No hot water at flow rate of > 23 l/min.
Traffic light display: yellow constantly on; green
flashing.
The high limit safety cut-out has responded (see
chapter “Specification / wiring diagram” or has suf-
fered a break in continuity.
Check the high limit safety cut-out and replace it if
required.
The heating system is faulty. Check the resistance of the heating system. and re-
place the appliance if required.
The PCB is faulty. Check the PCB and replace if necessary.
No hot water.
Traffic light display: red constantly on; green flash-
ing.
The cold water inlet temperature exceeds 35 °C. Reduce the cold water inlet temperature to the ap-
pliance.
The cold water sensor is faulty. Check the PCB and replace if necessary.
14. maintenance
WARNING Electrocution
Before any work on the appliance. disconnect all poles
from the power supply.
draining the appliance
You can drain the appliance for maintenance work or to protect
it from frost.
CAUTION Scalding
Hot water may escape when draining the appliance.
f f Close the shut-off valve in the cold water supply line.
f f Open all draw-off valves.
f f Undo the water connections on the appliance.
f f Store the dismantled appliance in a room free from the risk
of frost. as water residues remaining inside the appliance can
freeze and cause damage.