Varmeteknikk MB 35, Инструкция по установке, эксплуатации и обслуживанию

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Varmeteknikk AS August 2017 e-mail: post@varmeteknikk.no
14
Troubleshooting
NOTE! TROUBLESHOOTING MUST ONLY BE EXECUTED BY QUALIFIED PERSONNEL
FAILURE DISPLAY TEXT POSSIBLE CAUSE OF TROUBLE CONTROL /REPAIR
BOILER
”dead”
Control voltage missing Boiler needs separate
control voltage
Fuse/s for control voltage broken Check fuses and replace if
required
NO POWER
Temp 30.0 (80)°C
StepS 0 ( 0)
External start signal missing Check external signal. (See
terminal 1& 2 on –X1)
Temp 30.0 (80)°C
StepE 0 ( 0)
External signal for power control
missing Check external signal
TempE 20.0 (20)°C
Power 0kW
External signal for temperature
control missing Check external signal
Temp 0.0 (80)°C
Error Temp
Defect temp.sensor
Change temp.sensor and
Replace if required
BOILER
STOPS AT
STEP 3
(Alarm diode is
flashing)
Temp 30.0 (80)°C
Alarm Power
Connecting box mounted on left
side without moving transformer Transformer must be
mounted on same side as
connecting box
Temp 30.0 (80)°C
Alarm Power
Safety temp.limiter has tripped Reset safety temp.limiter
(STB) on front panel
Temp 30.0 (80)°C
Alarm Power
Main switch off or broken fuses Check switch board/fuses
Replace if required
LITTLE HEAT
FROM BOILER
Temp 50.0 (80)°C
Step 4 ( 4)
Maximum power limited
from outside Check external signals from
a central monitoring system
TempU 30.0 (30)°C
Power 0kW
Check if boiler is limited from
outdoor compensator Check curves for outdoor
compensation
Defect heating elements,
fuses, contactors Check heating elements,
fuses, contactors and
replace if required
STB, safety
temp.limiter
released
(Display shows
"Alarm Power")
Temp 30.0 (80)°C
Alarm Power
circulation in boiler Check pump/valves
Burned contactor
Check contactors and
replace if required
LEAKAGE
Loose screws for heating element Tighten screws
Gasket for heating element Replace if required
Defect heating element Replace if required