Sime SIME SUB HE/DHW 12/60, Инструкции по установке

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25
FUNCTIONING ERRORS
The table below shows the symptoms and actions to do in case of anomalies of the sub-
station.
Actions in case of operational disturbance must be done by qualifi ed technician. To gua-
rantee the operation and effi ciency of the substation, it is recommended that it is servi-
ced at regular intervals(at least annually) by a suitably qualifi ed engineer.
Symptom Diagnostic Reason Action
Cold heating
water
and tap water
ON-OFF switch light = OFF
No main power supply
Check electrical connection to
main supply
Internal 1.6 amp fuse
blown
Examine internal components
for damage,
replace as required. Replace
fuse and test.
(Spare fuse in control panel)
ON-OFF switch light = ON
and DHW request light = OFF
and CH request light =OFF No request from Room
Thermostat and DHW
tap Check the Room Thermostat
and
DHW fl ow switch
Cold or poor
domestic
hot water
temperature.
ON-OFF switch light = ON
and DHW request light=OFF
Flow rate at tap too low
Clean DHW fi lter or DHW plate
exchanger
Faulty DHW fl ow switch
Check or change the DHW
fl ow switch
DHW request light = ON
DHW mixing valve incor-
rectly set Set the DHW mixing valve at
desired temperature
DHW motorized valve
doesn’t open
Check DHW motorized valve
Too low primary inlet
temperature (min 65°C) Check the district heating
fi lter
Cold or poor
central heating
water tempe-
rature.
ON-OFF switch light = ON
and CH request light = OFF
No request from Room
Thermostat
Check the Room Thermostat
and its wiring
or that the TA link is fi tted
No request from Timer
(optional)
Check the timer (if fi tted)
that the link OP is fi tted.
(see electric scheme fi g. 8)
ON-OFF switch light = ON
and CH request light = ON
Circulation pump doe-
sn’t run Check the pump
Deareate the heating system
CH motorized valve
doesn’t open
Check CH motorized valve
CH mixing valve incor-
rectly set Set the CH mixing valve at
desired temperature
Too low primary inlet
temperature (min 65°C) Check the district heating
strainer
ON-OFF switch light = ON
and CH request light = ON Circulation pump doe-
sn’t run wait 3 minutes
check the CH motorized valve
Manometer
<
0,5 bar
Insuffi cient system
pressure Repressurise the system see
3.2.1
System requi-
res
Regular “top-
ping up”
Regular drop
in system pres sure indicated
at the manometer.
Safety valve leaking
Check for possible discharge
from the pressure relief valve,
if yes replace.
Check the expansion vessel
pressure, repressurise or
replace.
Leak on system
check internal pipe work and
central heating system for
leaks