IBC EX 850 User Manual

8.3.3 Hi/Low gas pressure switch error
High/Low Gas Press Error
Issue Diagnosis Fix
Error – High/Low Gas Press Inlet gas pressure has
risen above 15" w.c. or
has fallen below 3.5"
w.c.
Measure the inlet gas
pressure. Then reset the
switch.
8.3.4 Hi Limit cut-off temperature error
Hi Limit cutoff temperature Error
Issue Diagnosis Fix
Error – Water High-Limit
Exceeded
Water temperature exceeds hi-limit.
Boiler is in hard lockout mode.
See Water Temperature
function: reset and test on
page 110.
8.3.5 Low Water Cut-off error
Low Water Cutoff Error
Issue Diagnosis Fix
Error - Low Water Cutoff The Safety and Ignition module
has detected a low water
condition.
See Low water cutoff function:
reset and test on page 109.
8.3.6 Aux. Interlock 1 or 2
Aux. Interlock 1 or 2
Issue Diagnosis Fix
Interlock 1 or 2 terminals are
open.
Jumper lead is loose or
compromised.
Replace the jumper lead.
External safety is in an alarm
state.
Inspect the external safety
devices.
113
8.3.3 Hi/Low gas pressure switch error

IBC EX 850 Specifications

General

Brand	IBC
Model	EX 850
Category	Boiler
Language	English