Hi/Low Gas Pressure Switch Error; Hi Limit Cut-Off Temperature Error; Low Water Cut-Off Error; Aux. Interlock 1 Or - IBC EX Series Installation & Operating Manual

8.3.3 Hi/Low gas pressure switch error

Issue
Error – High/Low Gas Press

8.3.4 Hi Limit cut-off temperature error

Issue
Error – Water High-Limit
Exceeded

8.3.5 Low Water Cut-off error

Issue
Error - Low Water Cutoff

8.3.6 Aux. Interlock 1 or 2

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