H17
Panasonic
Gas Pressure Sensor Error
Panasonic water heater displays H17; unit may not ignite or may shut down quickly.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty gas pressure sensor, Blocked sensor tubing, Loose sensor connector, Defective PCB sensor circuit
How to Fix / Troubleshooting
Gas safety: Work on gas pressure components only if you are qualified. Incorrect handling can cause leaks or unsafe combustion.
- 1. Reset unit: Turn OFF power for a few minutes, then restore and test.
- 2. Inspect gas pressure sensor (qualified persons):
- Remove the front cover.
- Locate the gas pressure sensor and its small tubing connected to the gas valve or manifold.
- 3. Check tubing:
- Ensure the tubing is not kinked, blocked, or disconnected.
- 4. Check wiring:
- Verify the sensor connector is firmly seated on the PCB.
- 5. If H17 persists: The gas pressure sensor or PCB must be tested and replaced by an authorized Panasonic technician using proper gas pressure measuring equipment.
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Repair Difficulty
Professional Required
5/5
Required Part
Gas Pressure Sensor
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