VOKERA MYNUTE 15 VHE, Инструкция по установке и обслуживанию

Страница: 29 / 42

27
7.10 FAULT CODES
When the boiler detects a temporary fault condition, the appropriate code is shown fl ashing on the display. If/when
the fault code is fi nal, the pump will perform a 60-second post circulation and the red LED will be illuminated.
COMPONENT VALUE
Fan 230Vac
Pump 230Vac
Ignition transformer 230Vac
Gas valve 230Vac
Room thermostat connection 230Vac
NTC thermistor (dry contact) 10Kohm
NTC thermistor (wet contact) 10Kohm
FUNCTION VALUE
Standard Heating Range (°C) 40 – 76
CH limited power at 75% 15 Min
Heating OFF hysterisis ( 0 C) SP + 2
Heating ON hysterisis ( 0 C) SP – 8
Anti-cycle delay 5-min
Pump over-run 5-min
Low output (min. %) Min+25
CO function max temp. ( 0 C) 87
CO re-light temp. (
0
C) 75
CO function time 15-min
Flow NTC max temp. ( 0 C) 87
High limit thermostat ( 0 C) 97
Burner thermostat (
0
C) 170
Maximum differential ( 0 C) 35
IGNITION CONTROL VALUE
Ignition attempts before L/O (lockout) 5
Re-ignition attempts after loss of fl ame signal 5
7.9 COMPONENT VALUES & CHARACTERISTICS
NOTE
Restore the electrical supply to the boiler and turn the
selector switch to the on position. The boiler should now
function as described in section 7.2. Should the boiler fail
to respond, the internal fuses and connectors should be
checked to ensure integrity and continuity. If the boiler
still fails to respond, refer to the detailed faultfi nding
fl owcharts located at the end of this section.
CODE CAUSE ALARM TYPE ACTION
AL10 Ignition failure/not fl ame sensed, con-
dense sensor activated Final Reset, check appliance operation
AL20 Limit thermostat fault Final Reset, check appliance operation
AL21 External device fault (UHT/CPA) Final Reset, check appliance
AL26 Return temperature too high Final Reset, check pump, ensure there is suffi -
cient fl ow sensor temperature) circulation
around heating circuit/s
AL28 Temperature differential inverted (re-
turn sensor temperature higher than
fl owsensor temperature) Final Reset, check pump, ensure there is suf-
fi cient circulation around heating circuit/s
thermistors
AL34 Fan tacho signal fault Final Reset check appliance operation, check fan
AL52 Internal fault Final Reset, check appliance operation
AL55 Jumper tag fault Final Check jumper tag confi guration
AL60 Jumper tag fault Temporary Check jumper tag confi guration
AL71 Primary (fl ow) thermistor fault Temporary Check primary thermistor, check wiring
AL73 Return thermistor fault Temporary Check return thermistor, check /wiring
AL74 No water circulation Final Reset, check appliance operation, check
pump, ensure there is water and suffi cient
circulation around heating circuit/s
AL79 Flow temperature too high, or tempe-
rature differential between primary and
return too high Final Reset, check appliance operation, check
thermistors