Reliance Water Heaters N71120NE, N85390NE Ignition module system, System diagnostics

8.Remove the cleanout cover and place a clean plastic bucket next to the cleanout opening.

Partially open the cold water inlet valve to allow time to accomplish the following and then close the valve.

While the water is being run through the tank, insert a stiff wire, copper tube flattened at one end or an opened wire coat hanger through the cleanout opening and scrape out any loose deposits of scale or sediment. This is an economical way to avoid unnecessary usage of the deliming solution.

Repeat the opening and closing of the cold water inlet valve as necessary but be sure the heater is completely drained when ready to introduce the UN•LIME.

Upon completion, reinstall the cleanout cover and use a new cleanout cover gasket (part number 9004099215).

Remove the drain valve.

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 28, 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 28.

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 28.

ignition module system

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

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

•Check that after following the appliance OPERATING INSTRUCTIONS, the “Top Knob” of the appliance gas valve is in “ON” position.

•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 High Limit 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 module that incorporates a diagnostic system to assist in troubleshooting the appliance. The indicator codes on the ignition module are as follows:

TABLE 11:

1 FLASH	System lockout (retries or cycles exceeded)
2 FLASHES	Pressure switch stuck close
3 FLASHES	Pressure switch stuck open
4 FLASHES	Open on high temperature limit switch (eco)
6 FLASHES	115 volt AC power reversed (check polarity)
7 FLASHES	Low flame sense signal (make sure flame sensor is in
	burner flame)
8 FLASHES	Check igniter

continuous flash -> continuous flame sensed > 5 seconds without gas valve

continuous on -> internal control failure - replace ignition control module.

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

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