Hi Limit Cut-Off Temperature Error; Low Water Cut-Off Error; Aux. Interlock 1 Or - IBC VX Series Installation & Operating Manual

8.2.2 Hi Limit cut-off temperature error

Issue
Error – Water High-Limit
Exceeded

8.2.3 Low Water Cut-off error

Issue
Error - Low Water Cutoff

8.2.4 Aux. Interlock 1 or 2

Issue
Interlock 1 or 2 terminals are
open.
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.
90
Section: Troubleshooting
Fix
See Resetting a boiler after a
hi-limit temperature lockout on
page 88.
Fix
See Resetting a boiler after a
LWCO lockout on page 88.
Fix
Replace the jumper lead.
Inspect the external safety
devices.