American Water Heater BCL3 85T390 6NOX Ignition Control System, System Diagnostics

9.Install the long plastic male adapter insert fitting into the drain valve opening of heater after applying Teflon tape or paste to threads. Tighten firmly by hand and use wrench or adjustable pliers to check for secure connection. Do not over tighten to avoid damage to threads and fittings.

Prepare the Up-N-Down Transfer Kit

The next step is the preparation on the Up-N-Down Transfer Kit, if you have not already done so:

1.With the 5 gallon Up-N-Down container in the vertical position, unscrew the plastic vent cap in the handle and pierce the plastic membrane over the vent boss under the cap to allow the container to vent.

Note: If your container does not have the vent cap and vent boss, drill a 3/16” hole in the handle. When you have finished deliming you will be able to plug this drilled vent with the stainless steel screw that is supplied with the kit.

2.Remove the container’s cap and cut the plastic membrane located in the 3/4” IPT opening in the cap. Take care to not damage the threads.

3.Find the 3/4” male adapter, apply teflon tape to the threaded end and screw it into the 3/4” IPT opening in the cap.

4.Put cap with male adapter back on the container and slide 3/4” hose over end of male adapter and fasten in place using hose clamp provided.

Delime using Flo-Jug Method

5.Slide the hose clamp over end of hose and slide hose over the male adapter in the water heater drain opening and secure in place using hose clamp.

6.Lift container to the “Pour” Position, see Figure 27, being careful to keep the vent in the handle above the liquid level

and pour the UN•LIME into the heater.

7.Lower container, you may have to place the container on its empty carton to prevent the UN•LIME from flowing back into the container.

8.Let UN•LIME remain in the heater for 5 minutes and then lower the container to the “Drain” Position, see Figure 27.

9.Deliming activity is indicated by foaming on the surface of the UN•LIME. If there is deliming activity, repeat steps 6 thru 8.

Normally, lime removal will be completed within one hour. Severe build-up of lime may take longer than an hour to complete descaling.

Note: To check UN•LIME for continued use, place some scale or white chalk in a glass with a small amount of UN•LIME. If the material is vigorously dissolved by the UN•LIME, it can be reused; if not, the UN•LIME should be replaced.

Figure 27.

SERVICE

The installer may be able to observe and correct certain problems which may arise when the unit is put into operation. HOWEVER, it is recommended that only a qualified service agency, using appropriate test equipment, be allowed to service the heater.

As preliminary step, check wiring against diagram, check for grounded, broken or loose wires. Check all wire ends to be sure that they are making good contact.

Ignition Control System

Before calling your qualified service agency, the following checklist should be examined to eliminate obvious problems from those requiring replacement or servicing.

•Check that “main gas shutoff valve” is fully open and that gas service has not been interrupted.

•Check electrical supply to the appliance for possible blown (or tripped) fusing or power interruption. Also check the 3 amp fuse on the front of the digital thermostat (Fig. 2).

•Is the water temperature in tank below the thermostat dial setting on the appliance thermostat (calling for heat)?

•It is possible that the high limit (E.C.O.) has functioned to shut off the appliance. See page 7 - High Limit Switch for reset procedure. Contact your service agent if limit continues to function to shut off appliance.

System Diagnostics

Your water heater is equipped with an ignition control that incorporates a diagnostic system to assist in troubleshooting the appliance. The indicator codes on the ignition module are as follows:

Table 9.

2 FLASHES	Flame sensed without call for heat
3 FLASHES	Ignition lockout
Steady On	Internal control failure

If an internal control failure is indicated, replace the ignition control.

Use this diagnostic system in conjunction with “Troubleshooting” and the “SEQUENCE OF OPERATION” to troubleshoot the appliance.

Electrical Servicing

LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION.

VERIFY PROPER OPERATION AFTER SERVICING.

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