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AP18733 REV. 3.2.17
11
Ensure the Water heater Cabinet is Closed
Ensure the water heater cabinet is closed. Tighten the two upper and lower screws to secure it. The cabinet must be closed while the water
heater is running.
Check the Power Source
Make sure the power cord is properly connected. The main power line is connected to the manual switch box inside the water heater.
Check the Status of the Control Panel
Observe the Control Panel to ensure the water heater is powered on, and to check for any error codes. Clear any debris from the panel.
Check Exhaust Vent and Intake Pipe Terminations
Verify that the water heater exhaust vent and intake pipe terminations are clean and free of obstructions. Remove any debris from the
exhaust vent or intake pipe openings. If removing the debris does not allow the water heater to operate correctly, contact your qualified
service technician to inspect the water heater and the vent system.
2. MONTHLY MAINTENANCE
Check Exhaust Vent and Intake Piping
Visually inspect the exhaust vent for any signs of blockage, leakage, or deterioration of the piping. Inspect the exhaust vent bracing. Ensure
bracing is undamaged and in good condition. Notify a qualified service technician immediately if any problems are found.
WARNING
DO NOT attempt to disassemble this water heater. Doing so could result in improper water heater operation or premature water heater failure,
substantial property damage, and/or severe personal injury or death due to electric shock, re, or explosion. If repairs are required, contact a
qualied service technician.
Visually inspect the intake piping for any signs of blockage. Inspect the entire length of the intake pipe to ensure piping is intact and all
joints are properly sealed. Inspect the intake pipe bracing. Ensure bracing is undamaged and in good condition. Notify a qualified service
technician if any problems are found.
Check Pressure Relief Valve
• Visually inspect the primary pressure relief valve and discharge pipe for signs of weeping or leakage.
• If the pressure relief valve often weeps, the expansion tank may not be operating properly. Immediately contact a qualified service
technician to inspect the water heater and system.
Check the Condensate Drain System
• While the water heater is running, check the discharge end of the condensate drain tubing. Ensure no flue gas is leaking from the
condensate drain tubing by holding your fingers near the opening.
• If you notice flue gas leaking from the opening, this indicates a dry condensate drain trap. If problem persists, contact a qualified service
technician to inspect the water heater and condensate line and refill the condensate trap.
• If applicable, check the condensate neutralizer and ensure it is full of condensate neutralizing marble chips.
Cleaning the Air Intake Filter
The air intake filter should be cleaned once a month. If not, the water heater could encounter combustion problems.
To clean the air intake filter:
1. Press the Power button on the control panel to turn off the water heater.
2. Disconnect the power supply from the water heater.
3. If water heater has been operating, wait for it to cool before continuing.
4. Remove the front cover of the water heater cabinet.
5. Pull the filter screen screw and pull the filter out of the air intake adapter.
6. Remove the filter from the plastic assembly and clean it with a toothbrush and clean running water. See Figure 1.
7. Dry the filter completely. Then reinsert the filter into the plastic assembly.
8. Replace the front cover of the water heater cabinet. Reconnect power supply to the water heater.
9. Press the Power button on the control panel to turn on the water heater.
Figure 1 – Cleaning the Air Intake Filter
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