Frequently Asked Questions

Either the unit needs to be Reset, or a component inside the unit was fatally damaged (in which case, the Cooler Controller™ needs to be replaced). Cooler Controllers™ cannot be repaired.

No. The default temperature is factory pre-set to be 77° F.

Reset the unit:
For newer units, simply push the Reset button. The Reset button is labeled, and it is located below and to the right of the LCD (it is not on the left side of the LCD).
For older units, without a Reset button: disconnect electrical power at the circuit breaker panel for 10 to 15 minutes. This step may have to be repeated a few times. If the unit does not properly reset after repeated attempts, then the unit has failed and it should be replaced.

Then the Cooler Controller™ will not work for your application. Small diameter wires are for a Low Voltage thermostat – the Cooler Controller™ is for 115vac (Line) voltage control. For proper wiring of your Cooler Controller™, please review the Installation Instructions. If needed, contact an electrician.

The purge pump will purge cooler reservoir within the next 8 hours of cumulative cooler operation.

The Purge pump drain adapter is not installed. Install the drain adapter into the overflow pipe (e.g. Dial PN 1552 or 1554).

With a hose or piping connected to your cooler drain, place a container (bucket) at the other hose end. After the pad pump has been “ON” for 8 hours, water should exist inside the container.

Each cycle will last for about 7 to 8 minutes.

The purge pump water flow rate is about 200 GPH. So the drain time depends on the size and type of cooler that you have. For a residential size Single Inlet cooler (rigid media), it will drain the reservoir in about 2 to 3 minutes. For a standard residential down draft cooler, it will drain the reservoir in about 3 to 4 minutes. And for a standard residential side draft cooler, it will drain the reservoir in about 5 to 6 minutes.

Yes, simply install a pump hose restrictor clamp (e.g. Dial P/N 9287) and adjust as needed.

Dura-Cool™ Pads

• cooler air
• removes particulates
• usually can be cleaned
• non-allergenic - odorless
• won't shed fiber
• cut to fit

Aspen Pads

• costs less to buy
• replace Aspen pads twice a year for best cooling
• can shed fiber
• fold to fit

Clean the Dura-Cool™ pad and add a small amount of washing machine fabric softener or use Dial's Fresh-Air™ to eliminate or reduce channeling. Replace pads if necessary.

Use 2 Dura-Cool™ pads in each pad frame.

Rinse pads with garden hose, using gentle thumb pressure to avoid damaging Dura-Cool™'s absorbent material. For excessive scale buildup, replace pads.

It is normal for Rigid Media pads to have some level of “Start-Up” odor. To help remove this odor, simply operate the "pump only" for about 30 to 60 minutes, and then drain the water out of the cooler and refill with fresh water. Repeat this procedure, if needed.

If you have repeated the above draining procedure and the odor still won’t go away, then remove the media and wash with a garden hose or soak in water. Re-install Rigid Media. Media odor will dissipate in a few days.

For applying Premium "One Coat" cooler coating (Quart, Gallon and 5 Gallon):
Thickness Guideline: Apply coating to be about 1/16 to 3/32 inch thick. This is about the thickness of a dime. Avoid applying too thick.
Cure Time Guideline: Coating cure time is dependent upon a number of conditions (temperature, humidity level, etc.), but mainly the coating thickness. The thicker the coating the longer the cure time. Typically, properly applied coating should cure within 24 to 48 hours.

The metal surface on "new cooler" water reservoirs is specially coated to prevent corrosion for many years. Use of anodes on these new coolers may damage the protective coating. Anodes should be used when the original factory warranty has expired and when the water reservoir has become corroded.

The In-Line Scale Eliminator Cartridge is not a sediment filter. Rather, it is a water conditioner that uses phosphate to raise the cooler water's ability to hold minerals in suspension so that water minerals will not adhere to cooler pad frames, water reservoir or cooler parts. For the In-Line Scale Eliminator to work, cooler water must be purged with a purge pump or bled with a bleed off tee.

When replacing a cooler motor, always choose the same horse power, speed and volt rating.

As a rule, heavy-duty bronze valves last the longest, followed by brass and then the standard valve. Heavy-duty bronze valves resist corrosion and the float can easily be adjusted.

Do not use Dial's poly tubing for potable water. The tubing material has not been approved for potable use. Do not use Dial's poly tubing for indoor, garage or attic applications. Poly tubing may leak due to wall thickness variations and tubing degradation over time. Only use copper tubing that has been approved for indoor applications and/or potable water.

Do not use Fresh Air or Cooler Tab's in fish ponds. The ingredients have not been tested or approved for non-cooler applications.