Other Symptoms - A.O. Smith 300 Series Installation And Operating Manual

OTHER SYMPTOMS

Problem
1. Thermostat set too low
2. Leaking faucets/Wasted hot water
3. Wrong piping connections
Insufficient
4. Water heater too small
Hot Water
5. Sediment or lime in tank
6. Long runs of exposed piping
7. Hot-water piping in outside wall
1. Thermostat setting is too high
Water Is 2. Heater stacking (Failure to install
Too Hot the proper vent screens)
1. Thermostat set too low
Slow Hot 2. Wrong piping connection
Water Recovery 3. Wasted hot water
4. Heater too small
1. Heater stacking (Failure to install
the proper vent screens)
2. Closed water system
Drip From
3. Pressure build-up
Relief Valve
4. Improperly seated valve
1. Sulfides in water supply
2. Bacteria in water supply
Smelly Water
3. Incompatible anode
1. Filling the new water heater for the
first time
Condensation
2. Water dripping from blower
assembly
Water Leakage
1. Failure to use correct size of
exhaust and air intake pipes;
Exhaust Pipe 2. Failure to install the vent screens;
Too Hot 3. Blower high limit switch fails to
open - switch defective
100304526_2000545240 _Rev. 01
Possible Cause(S)
www.hotwater .com
Corrective Action
1. Turn temperature knob to higher setting
2. Repair faucets
3. Correct piping: dip tube must be in cold inlet
4. Install adequate heater
5. Drain/flush-provide water treatment if needed
6. Insulate piping
7. Insulate piping
1. Turn temperature knob to lower setting
2. Ensure correct size of exhaust and air intake pipes
were used per the instruction manual for vent
length. Ensure proper vent screens were used.
1. Turn temperature knob to higher setting
2. Correct piping-dip tube must be in cold inlet
3. Advise customer
4. Install adequate heater
1. Ensure the correct size of exhaust and air intake
pipes were used per the instruction manual for vent
length. Ensure the proper vent screens were used.
2. See thermal expansion section
3. Use a pressure-reducing valve and relief valve
4. Check Relief valve for proper operation (Do Not
plug T&P valve)
1. Chlorination procedure
2. Chlorination procedure
3. Replace with anode appropriate for water
conditions
1. Normal operation: the condensation should
disappear after heater warms up
2. Install condensate hose to drain port on the rubber
coupling
1. Check "Leakage Checkpoints"
1. Ensure the correct size of exhaust and air intake
pipes were used per the instruction manual for
vent length. Ensure maximum number of elbows or
equivalent feet of both pipes was not exceeded.
2. Ensure that the proper vent screens were used.
3. Replace blower high limit switch
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