Hydrocollator Pilot Light – Chattanooga Part 22148

The Hydrocollator Pilot Light, Chattanooga part number 22148, is a replacement indicator light designed for compatible Chattanooga Hydrocollator heating units. Located on the front control panel, this small but important component provides a visual indication that electrical power is reaching the unit.

When the Hydrocollator is plugged into a functioning outlet, the pilot light should illuminate. If the unit is connected to power but the light remains off, the lamp may have burned out, the unit may not be receiving electricity, or another internal electrical issue may be present.

Replacing a damaged or nonfunctioning indicator can help restore the original appearance of the control panel and make it easier for staff to confirm that the Hydrocollator is connected to power.

What Does the Pilot Light Do?

The pilot light serves as a basic power indicator. It does not control the temperature or switch the heating element on and off. Instead, it lets the operator know that the unit is plugged in and receiving electrical power.

A working indicator is useful during daily operation because it gives clinic staff a quick visual reference before checking the water temperature or removing HotPacs.

If the light is illuminated but the water is not heating, the problem may involve another component, such as:

The heating element
The thermostat
The overtemperature switch
Internal wiring
The power switch or power cord

If the light is off, the outlet, cord, wiring, and indicator itself should be inspected before determining which part has failed.

Common Signs That Replacement May Be Needed

A replacement Hydrocollator Pilot Light may be needed if:

The unit is receiving power, but the indicator does not illuminate
The lens is cracked, cloudy, loose, or missing
The lamp operates intermittently
The wire terminals are damaged or corroded
The indicator no longer fits securely in the control panel
The original light was damaged during service or control-panel repair

Because an unlit indicator can also be caused by a loss of electrical power, the unit should be properly tested before replacing the part.

Compatible Hydrocollator Models

Part 22148 is listed for use with several Chattanooga Hydrocollator models, including:

E-1
E-2
SS (discontinued)
SS-2
M-2
M-4
Select C-2 and C-6 configurations

Compatibility may depend on the age, serial number, and control-panel style of the unit. Both older- and newer-style pilot-light configurations have been associated with Chattanooga part number 22148. The newer version is commonly described as having a clear lens, white body, 0.250-inch terminals, and a 125 VAC rating. Some older units use a different bezel, terminal size, or panel opening.

Always compare the existing light and electrical connections before ordering.

Installation Information

Installation requires access to the internal electrical components behind the Hydrocollator control panel. Before beginning service:

Disconnect the unit from electrical power
Allow the water and metal surfaces to cool completely
Drain the unit if required for safe access
Verify the voltage and terminal configuration
Inspect the wiring for heat damage, corrosion, or loose connections

The replacement light should fit securely in the panel opening, and all terminals should be connected according to the manufacturer’s service documentation.

Because Hydrocollators contain line-voltage electrical components and heated water, installation should be completed by a qualified service technician.

Product Details

Product: Hydrocollator Pilot Light
Chattanooga part number: 22148
Replacement front-panel power indicator
Clear indicator lens
Commonly rated at 125 VAC
Fits select Chattanooga Hydrocollator models
Available in different styles depending on unit age
Professional installation recommended

The Hydrocollator Pilot Light is a practical replacement part for restoring the power indicator on a compatible Chattanooga heating unit. Confirming the model, serial number, panel opening, and terminal style before ordering will help ensure the correct version is selected.

MANUAL LOCATED HERE

power indicator

Chattanooga® Older Hydrocollator Standard Pilot Light (PN 22148)