Waiting for
Damper to open
This is the Damper proving time when the damper relay closes until the Damper prove interlock
closes on J12B.7 & J12B.8.
Waiting for Flow
This is the flow proving period that is in effect when starting the boiler. The pumps/valves
would have been called on prior to this message. It’s time may be extended using the flow prove
time..
Waiting for Start
Sequence
The boiler has begun to start and is waiting for the handshaking events to begin with the ignition
control and the HeatNet control.
Warm Weather
Shutdown in effect
The WWS temperature has been exceeded. The boiler system is in a sleeping state, but can be
awoken with a DHW call. Once the outside a ir temperature falls below the WWS temperature,
normal space heating will restart.
Warning
This message, unlike a Fault, still allows the boiler to function, but the issue should be serviced.
∆T has Exceeded
its Limit
The delta temperature across the boiler is too high
∆T has Reached its
Warning Limit
The ∆T WARNING has been selected instead of FAULT when the Delta T has been exceeded.
Low Fire
Shutdown
When a call for heat has ended, and if the firing rate was greater than 50%, the boiler will drop
to low fire and run for one minute before shutting off.
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