Troubleshooting Guide

COMPLAINT	CAUSE	REMEDY

Compressor will not run,	Thermostat	Check the position of knob If not at the coldest set-
but fan motor runs.		ting, advance the knob to this setting and restart
		unit.
		Check continuity of the thermostat. Replace ther-
		mostat if circuit is open.

	Thermistor	Check the TEMP control. If not at the lowest num-
		ber, set TEMP control to this setting and restart
		the unit. Check the continuity of the thermistor.
		Replace the thermistor if the circuit is open.

	Capacitor (Discharge	Check the capacitor.
	capacitor before servicing.)	Replace if not within ±10% of manufacturers rat-
		ing. Replace if shorted, open, or damaged.

	Compressor	Check the compressor for open circuit or ground. If
		open or grounded, replace the compressor.

	Overload	Check the compressor overload, if externally
		mounted. Replace if open. (If the compressor tem-
		perature is high, remove the overload, cool it, and
		retest.)

Compressor cycles on	Voltage	Check the voltage.
overload.		If not within limits, call an electrician.

	Overload	Check overload, if externally mounted.
		Replace if open. (If the compressor temperature is
		high, remove the overload, cool, and retest.)

Compressor cycles on	Fan motor	If not running, determine the cause. Replace if
overload.		required.

	Condenser air flow restric-	Remove the cabinet. inspect the interior surface of
	tion	the condenser; if restricted, clean carefully with a
		vacuum cleaner (do not damage fins) or brush.
		Clean the interior base before reassembling.

	Condenser fins (damaged)	If condenser fins are closed over a large area on
		the coil surface, head pressures will increase,
		causing the compressor to overload. Straighten
		the fins or replace the coil.

Compressor cycles on	Capacitor	Test capacitor.
overload.	Wiring	Check the terminals. If loose, repair or replace.

	Refrigerating system	Check the system for a restriction.

Insufficient cooling or heat-	Air filter	If restricted, clean of replace.
ing
ing	Exhaust damper door	Close if open.
	Exhaust damper door	Close if open.

	Unit undersized	Determine if the unit is properly sized for the area
		to be cooled.

Excessive noise	Turbo or fan	Check the set screw or clamp. If loose or missing,
		correct. If the turbo or fan is hitting air guide,
		rearrange the air handling parts.

	Copper tubing	Remove the cabinet carefully and rearrange tubing
		not to contact cabinet, compressor, shroud, and
		barrier.

33Room Air Conditioner

RAD-183A, RAD-243A specifications

The Heat Controller RAD-183A and RAD-243A are advanced heating solutions designed for optimal climate control and energy efficiency. These models cater to both residential and commercial spaces, providing reliable heating with user-friendly features and innovative technologies.

One of the standout features of the RAD series is its exceptional heating capacity. The RAD-183A has the capability to heat spaces up to 1,800 square feet, making it ideal for medium-sized rooms, while the RAD-243A can effectively service larger areas, catering to spaces of up to 2,400 square feet. This capacity ensures that users can maintain a comfortable environment regardless of external weather conditions.

Both models are equipped with smart heating technology that adjusts the output based on the room's temperature. The thermostat embedded in the RAD-183A and RAD-243A allows for precise temperature control, ensuring that the desired warmth is maintained without unnecessary energy consumption. This means users can rely on their heating system to provide a cozy atmosphere while saving on energy bills.

Energy efficiency is at the forefront of the design for both models. They are engineered to comply with rigorous energy consumption regulations, helping to reduce carbon footprints and lower operating costs. Their high efficiency ratings reflect their capability to deliver maximum heat output while utilizing minimal electricity. This makes them an environmentally friendly choice for conscientious consumers.

Another key characteristic of the RAD-183A and RAD-243A is their user-friendly interface. Both units feature easy-to-read displays and intuitive controls, allowing users to adjust settings effortlessly. With programmable features, homeowners can set schedules to align with their daily routines, further optimizing energy use while ensuring comfort.

Safety is also a paramount consideration in the design of these models. Equipped with multiple safety features, including overheat protection and tip-over switches, users can have peace of mind knowing that their heater operates safely and reliably.

In summary, the Heat Controller RAD-183A and RAD-243A stand out in the market due to their efficient heating capabilities, smart technology, energy efficiency, and user-centric design. With these models, individuals can experience warmth and comfort in their spaces while being mindful of energy consumption and safety.

Troubleshooting Guide

COMPLAINT

RAD-183A, RAD-243A specifications