Rheem IKONIC RTGH-SR11i - Error A012

IKONIC Tankless Water Heater Service Manual
41
ERROR A012
EXPLANATION
Unit Detected Flame and Lost It.
If the water heater detects loss of flame during combus-
tion, the water heater stops supplying fuel, attempts to
restart, counts the number of flame loss incidents. If the
incident occurs 15 times consecutively, the water heater
displays the “A012” error code on the User Interface.
Diagnostic check items.
• Gas supply pressure
• Gas lter
• Air lter
• Venting
• Flame rod
• Gas air ratio valve
• Solenoid valve (SV)
Check method
Gas supply pressure
1. Check the gas supply pressure at the gas connection
of the water heater.
The correct gas pressures are below;
• Natural Gas (NG); 4.0”-10.5” W.C.
• Liquid Propane (LP); 8.0” -13.0” W.C.
2. While the static pressure is normal, the use of an-
other gas appliance may cause a possible drop to the
water heater. Therefore, it is required to check the dy-
namic pressure.
• Static pressure: Gas pressure during standby.
• Dynamic pressure: Gas pressure at max combustion.
Gas lter
Check the gas lter at the gas connection of the water.
Ensure the lter is not blocked by some foreign sub-
stance.
If the gas lter is blocked by something, clean the gas
lter, and remove the cause.
Air lter
Check the air lter at the inlet air connection of the water
heater. Ensure the lter is not blocked by some foreign
substance.
If the air lter is blocked by something, clean the air lter,
and remove the cause.
ERROR CODE DIAGNOSTICS