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Plumberpro
Plumberpro, Mechanical Engineer
Category: HVAC
Satisfied Customers: 634
Experience:  Over 20 years experience in plumbing heating and gas
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Programmer is a Danfoss 9000. It is showing "Er 1" on the

Customer Question

Programmer is a Danfoss 9000. It is showing "Er 1" on the display & the heating/hot water's off.
No mention in the user guide or installation instructions.
What does it mean & what needs to be done?
Thanks
JP
Submitted: 3 years ago.
Category: HVAC
Expert:  Plumberpro replied 3 years ago.
Hi , do you know if it is a wireless one?
Expert:  Plumberpro replied 3 years ago.
Hi . I will try to help . Do you know the exact model of your boiler , ie , combi24,28, or 30
Expert:  Plumberpro replied 3 years ago.
Hi . I need a little more information.