Blocking Codes - Lochinvar EFW 85 Installation, Commissioning, User And Maintenance Instructions

Blocking codes

Blocking Error Description
code
100 WD Error Internal software error
Ram
101 WD Error Internal software error
Rom
102 WD Error Internal software error
Stack
103 WD Error Internal software error
Register
104 WD Error Internal software error
Xrl
105 High T_Supply sensor measures over Stay_Burn-
Temp Er- ing_Temp for a period of Max_Value_Pe-
ror riod.
106 Refhi Too Internal hardware error
Hi Error
107 Refhi Too Internal hardware error
Lo Error
108 Reflo Too Internal hardware error
Hi Error
109 Reflo Too Internal hardware error
Lo Error
110 Refhi2 Internal hardware error
Too Hi
Error
111 Refhi2 Internal hardware error
Too Lo
Error
112 Reflo2 Internal hardware error
Too Hi
Error
113 Reflo2 Internal hardware error
Too Lo
Error
114 False Flame is detected in a state in which no
Flame flame is allowed to be seen
116 Low Wa- Low water pressure, generated when the
ter pressure drops below Minimal_Pressure,
Pressure or when the pressure drops
Sensor below 0.3 bar.
118 WD Com- Watchdog communication error
munica-
tion
Error
119 T Return Return sensor open
Open
120 T Supply Supply sensor open
Open
98
Cause
wrongly pro-
grammed BCU or PB
wrongly pro-
grammed BCU or PB
wrongly pro-
grammed BCU or PB
wrongly pro-
grammed BCU or PB
wrongly pro-
grammed BCU or PB
not enough water-
flow over heat ex-
changer
wrongly pro-
grammed BCU or PB
wrongly pro-
grammed BCU or PB
wrongly pro-
grammed BCU or PB
wrongly pro-
grammed BCU or PB
wrongly pro-
grammed BCU or PB
wrongly pro-
grammed BCU or PB
wrongly pro-
grammed BCU or PB
wrongly pro-
grammed BCU or PB
wrong earthing of
BCU and boiler
Not enough water
pressure
wrong programmed
BCU or PB
malfunctioning re-
turn sensor or not
connected
malfunctioning sup-
ply sensor or not
connected
E93.1804.014
Solving
reset BCU or replace BCU and
/ or display unit
reset BCU or replace BCU and
/ or display unit
reset BCU or replace BCU and
/ or display unit
reset BCU or replace BCU and
/ or display unit
reset BCU or replace BCU and
/ or display unit
Check functioning of the
pump.
Check/open all valves that
might restrict the water flow
through the unit.
Check for an external system
pump that influences flow
through the unit.
Check if the system resistance
exceeds the spare capacity of
the unit pump.
reset BCU or replace BCU and
/ or display unit
reset BCU or replace BCU and
/ or display unit
reset BCU or replace BCU and
/ or display unit
reset BCU or replace BCU and
/ or display unit
reset BCU or replace BCU and
/ or display unit
reset BCU or replace BCU and
/ or display unit
reset BCU or replace BCU and
/ or display unit
reset BCU or replace BCU and
/ or display unit
Check earthing of BCU and
boiler
Fill up the system and check if
there are any water leakages
reset BCU or replace BCU and
or display unit
check connection to BCU or
check resistance NTC sensor
check connection to BCU or
check resistance NTC sensor