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12 – Error Code
Explanation: Commonly a result of inadequate GAS
SUPPLY. Unit detected the presence of flame then Flame
Rod lost flame recognition.
First Check: *GAS SUPPLY & VENTING*
Make sure you have sufficient fuel for the unit to operate properly.
1.
Gas Type (LP or Natural Gas)
2.
Gas Pressure
3.
Gas Pipe Size
4.
Gas Flex Line Not To Exceed 36" In Length, has the proper ID (Inside Diameter), and correct BTU rating
5.
Gas Regulator
6.
Gas Shut Off Valves
7.
Air In Gas Line
Visually inspect venting for possible blockage and/or recirculation of exhaust.
1.
Approved Venting Materials
2.
Approved Vent Terminations
3.
Vent Lengths
4.
Location Of Vent Termination (Recirculation of exhaust)
5.
Blocked Venting
6.
Venting Not Sealed Properly
SVC 820-Tankless Gas Trouble Shooting Manual
GAS SUPPLY & VENTING
**REFER TO USE & CARE MANUAL**
Diagnostic Checks:
•
GAS SUPPLY & VENTING
•
Flame Rod(s)
•
Gas Control Valve
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