Honeywell EN2H-0221GE51 R0808 ユーザーズマニュアル

Hydraulic Components 

SDC / DHC  

248 EN2H-0221GE51 

R0808 

The last (most recent) fault message is in first position; the 
previous fault messages are shifted down by a position with each 
new fault message. The fifth fault message is deleted when a new 
fault message appears. 

 

Display of logical 
fault messages 

SYSTEM 13 

Fault memory 
inquiry 

FAULT MESSAGE 

ERR-1 . ERR-5 

 

In the case of condensing systems with automatic stokers, the 
outside sensor input can be used to switch off the heating system. 
A sensor short-circuit at the outside sensor suppresses a fault 
message regarding this and switches off the system. The 
message "Heating system off" appears instead of the fault 
message in this case. 

If a heat generator defect occurs (fault message 30-1 or 31-3) and 
system frost protection is active at the same time, boiler start-up 
protection is switched off and thus the heating circuit pumps are 
started to minimise the danger of system freezing. 

With connection of an automatic stoker, further fault messages 
may arrive from it. They are displayed as follows. 

 

Water 
pressure 

S0-1 Water 

pressure 

 

HIGH 

Water 
pressure 

S0-5 Water 

pressure 

 

LOW 

Water 
pressure 

S0-2 Water 

pressure 

 

MIN 

Ventilation S1-0 Ventilation   

 

Maintenance S2-0  Maintenance   

 

Switch-off –  Switch-off   

OFF 

Service 240-1 

Service     

NOTE