Gabarron MATTIRA MAS18 Instrucciones De Instalacion Y Uso página 37

7 TROUBLESHOOTING
7.1 POSSIBLE FAULTS & SOLUTIONS
Problem
Boiler will not start
Fault E1 displayed
Heating flow temperature sensor
Fault E2 displayed
Heating return temperature sensor
Fault E3 displayed
Heating system water flow switch
Fault E8 displayed
Outdoor temperature sensor
Heating system water
discharging from 3 bar safety
valve
The buttons do not respond
Low heating temperature
If the suggested action fails to resolve a problem, please contact ELNUR technical service for further advice.
Possible cause
No power to boiler.
No power.
Heating overheat. Switch tripped.
Heating water out temperature
probe defective.
Heating water return
temperature probe defective.
Low heating system pressure.
Pump not turning.
Air in system.
System resistance too high or
blockage.
Defective outdoor temperature
sensor or not present.
Excessive heating system
pressure.
Control panel blocked
Settings too low.
Failure of heating elements
Heat requirements miscalculated.
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Solution
Check incoming power supply.
Check boiler control switch is on. (See
Section 6.1.)
Locate switch and reset. (See Section 7.2)
Contact Technical Service
Contact Technical Service
Check for leaks.
Refill heating system to 1.5 bar.
Check rotating freely (sect 5.5)
Replace pump if necessary.
Purge thoroughly.
Check automatic air valve open.
Vent pump (sect 5.5)
Check pump speed 3.
Check pump duty (sect 4.9)
Open all radiator valves.
Install system by-pass.
This sensor is optional. Check
connections. Replace sensor if necessary.
Check filling loop not passing and remove.
Check expansion vessel is charged to
correct level with air.
Check system expansion volume.
See Section 6.8 BLOCKING THE
CONTROLS
Check temperature & output selected.
Check and replace.
Re-calculate & configure.