Observe green LED indicator on gas control. Status flash codes are displayed with a three second pause before repeating. Check and repair the system as noted in the troubleshooting table below.
| LED Status | Control Status | Probable Cause | Service Procedure |
| None (LED not
on or flashing) |
Pilot assembly is not lit. | Gas control is not
powered. Light pilot. |
If the pilot will not stay lit replace pilot assembly. If problem persists replace gas control. |
| One flash and
three second pause |
1. If setpoint knob is in “PILOT” position then pilot flame is
detected. Turn setpoint knob to desired setting. 2. If the setpoint knob is already at the desired setting, the water heater is satisfied. |
1. Gas control is
powered and waiting for setpoint knob to be turned to a water temperature setting. 2. Water heater is satisfied and operating normally. |
Normal operation. |
| LED on
continuously (solid) |
Setpoint knob has been recently turned to the “OFF” position. Wait until LED goes out before
attempting to relight. |
Setpoint knob was
turned to “OFF” position. |
LED will go out and the
control will function normally once the pilot is lit. |
| Two flashes
and three second pause |
Weak pilot signal detected. System will reset when pilot flame is sufficient. | 1. Thermopile failure. 2. Unstable pilot.
3. Pilot tube blocked or restricted. |
1. See Service Procedure IV 2. See Service Procedure II 3. See Service Procedure II |
| Three flashes
and three second pause |
Insufficient water heating.
System will reset. |
1. Thermal sensor out of calibration.
2. Faulty gas control. |
Replace gas control. |
| LED Status | Control Status | Probable Cause | Service Procedure |
| Four flashes
and three second pause |
Excessive tank temperature. System must be reset. | 1. Temperature sensor out of calibration.
2. Faulty gas control. |
Replace gas control. |
| Five flashes
and three second pause |
Temperature sensor fault. | 1. Damage to the
temperature sensor, resistance is out of range, or sensor is unplugged. 2. Faulty gas control. |
1.See Service Procedure VI 2.Replace gas control. |
| Six flashes
and three second pause |
Water leak detected by
accessory module. |
Excessive amount of water in drain pan/water dam. | 1. Check T&P valve.
2. Check all water fittings. 3. Pressurize and leak test tank. |
| Seven flashes
and three second pause |
Gas control electronic fault detected. | 1. Control needs to be reset.
2. Control is wet or physically damaged. |
1. Reset gas control
2. Replace gas control. |
| Eight flashes
and three second pause |
Standing pilot remains on while setpoint knob is in
“OFF” position. |
Pilot valve stuck in
open position. |
Replace gas control. |
