Troubleshooting: Insufficient Hot Water - A.O. Smith BFM - 100 Installation & Service Manual

11.3 Troubleshooting: insufficient hot water

Warning
Maintenance may only be performed by a qualified service and maintenance engineer.
Insufficient hot water
Symptom Cause
Insufficient hot water Water temperature
setting (T ) is too low
set
Hot water supply is
used up
Instruction manual BFM
Solution
Set the control thermostat (7.5 "Control thermostat")
value
1. Reduce hot water consumption and give the appliance time to
heat up.
2. If this error persists, check whether the high-limit thermostat is
switching.
If this is the case, check that the circulation and/or top to bottom
circulation pump are working.
Remark
to a higher
If this error persists, check whether the high-limit thermostat is
switching.
is
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