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Zero Appliances JSD 40-LN1 - Troubleshooting Common Issues; Professional Maintenance Checklist

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Trouble Shooting
Protective Function
Reaction
Solution / Remarks
Water Pressure Too High
If Water Pressure is Over 0.8Mpa, the Water-Out
Valve will Release Water and Lower the Pressure
Increase Valve Pressure Limit
According to Local Water Supply
Pressure
Water Pressure Too Low
If Water Pressure is Below 0.025Mpa the Water
Heater Cannot be Ignited
Water Pressure Pump to be Fitted or
Use Water Heater when Pressure is
Higher
20 Minute Auto Shut Off
Shuts Off Automatically After 20 Minutes of Use
Restart Water Heater
Low Battery
Although a Spark Sound can be heard the Battery
Power is too Low to Open the Solenoid Valve
Change to New Quality Batteries
Over Heat Protection
Water Heater Automatically Shuts Off when Water
Temperature is Above 77˚C
Restart Water Heater When Water
has Cooled
Repair and Maintenance by Professional Person
Gas water heaters MUST be checked by a professional person annually. The following points
MUST be checked;
Leaks on the gas connections.
Leaks on water in and outlets.
Water inlet sieve free from dirt and clogging clean if necessary.
All parts functioning 100%
Flame quality and combustion (Soot)
Carbon accumulation on heat exchanger clean if necessary.
No combustion leaks to the inside of the room.
Gas regulator checked.
Clean carbon accumulation and oxidation on ceramic ignitors if necessary.

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