LOG ENTRY HeatNet Control V3
Page 87
SHORTED OUTSIDE SENSOR,
SUPPLY SENSOR,
RETURN SENSOR,
HEADER SENSOR,
DHW SENSOR
If one of the 10k thermistor sensors was detected to be shorted this fault will
be logged.
If a call is made to the ignition control to start and the HeatNet control detects
a blower start, but no Pilot within two minutes, the boiler locks out. This log
entry indicates that the blower was ON with no flame in the boiler. Freeze up
protection.
LOST BOILER #
FOUND BOILER #
These log entries indicate that HeatNet has either discovered a boiler or lost a
boiler using its auto detection algorithm.
FAIL SAFE H-NET LOST
FAIL SAFE LOW TEMP
If the Fail Safe modes are active, these log entries indicate that they became
active for some reason and the boiler had entered Fail Safe mode.
The Base load Boiler Relay K8 is Active if ON
Inactive if OFF
If the H-Net control closes the last interlock string connected to the ignition
control and the ignition control never closes its Blower Relay, the H-Net
control will wait 2 minutes. The H-Net control will then retry for the duration
of the local pump post purge time and then retry the ignition sequence. During
this time “retry strt” will be displayed in the status screen. After (5) attempts
the H-Net control will lock out and display call service.
The # of boilers that can fire is limited due to flow or the BMS.
When the temperature across the heat exchanger has been greater than the
EXCHR DELTA T RANGE degrees F.
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