Troubleshooting Table - 'Insufficient Hot Water - A.O. Smith ADM - 40 Installation, User And Service Manual

11.5 Troubleshooting table - '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 ADM
Precautions
Set the control thermostat (7.5 "Control thermostat") to a higher
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.
Comment
If the error has not been rectified, and no other cause can be found,
isolate the appliance from the mains (10.3 "Isolating the appliance
from the mains"), shut off the manual gas valve and alert your
installation engineer.
is
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