Using a Thermocouple

Problem	Possible cause	Corrective action
	The internal mechanism is	Properly insert the internal
	not inserted properly into the	Properly insert the internal
	not inserted properly into the	mechanism into the housing.
	housing.	mechanism into the housing.
	housing.
	The power supply is not	Properly connect the power
	connected to its terminals	supply to the power supply
Nothing displays when the	properly.	terminals.
Nothing displays when the	No power is supplied, or the	Supply a voltage of 85 to 125
controller is turned on.	No power is supplied, or the	Supply a voltage of 85 to 125
controller is turned on.	supplied power is not within	VAC to the power supply
	supplied power is not within	VAC to the power supply
	the specified range.	terminals of the controller.
	Disconnect switch or Control	Check control power fuse for
	Disconnect switch or Control	continuity. Turn disconnect
	Power switch not set to ON.	continuity. Turn disconnect
	Power switch not set to ON.	switch and control power
	Control Power fuse blown.	switch and control power
	Control Power fuse blown.	switch ON.
		switch ON.
	Input polarity on thermo-	Properly wire the terminals.
	couple is wrong or	Properly wire the terminals.
	connection is wrong.
	No compensating lead wires	Use proper compensating
	used for extension of the	Use proper compensating
	used for extension of the	lead wires and terminals.
	thermocouple.	lead wires and terminals.
	thermocouple.
		Use a dedicated thermo-
	Thermocouple and controller	couple connector. If a
	Thermocouple and controller	connector is a metal different
Process value is abnormal or	are connected by wires other	connector is a metal different
	are connected by wires other	from the thermocouple and
	than proper lead wires.	from the thermocouple and
not obtained.	than proper lead wires.	controller, a temperature
not obtained.		controller, a temperature
		error may result.
	Sensor is broken or short-	Replace with a good sensor.
	circuited.	Replace with a good sensor.
	circuited.
	The controller is influenced	Separate input wires as far
	The controller is influenced	as possible from the origin of
	by noise or other induction.	as possible from the origin of
	by noise or other induction.	the noise.
		the noise.
	Celsius temperatures used	Setup mode level 2 display
	instead of Fahrenheit or vice	d-U. S-V display shows
	versa.	setting.

Determining Temperature Controller Errors or Sensor Errors

If the controller displays a temperature that is close to room temperature (70ºF/21ºC) when you short- circuit controller input terminals, the controller is normal and the sensor is probably broken, short- circuited, or incorrectly wired.

Using a Platinum Resistance Thermometer

If the controller displays a temperature of about 0.0°C (32ºF) when you insert a 100-ohm resistor between terminals A and –Bof the controller, and you short-circuit controller terminals +B and

–B, the controller is normal and the sensor is probably broken, short-circuited, or incorrectly wired.

Cabinet Series Dehumidifying Dryer

100, 150, 90, Cabinet Series Dehumidifying Dryer, 225 specifications

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Sterling Plumbing 90, 225, 150, 100 Determining Temperature Controller Errors or Sensor Errors

Models: 100 150 90 Cabinet Series Dehumidifying Dryer 225

Problem

Determining Temperature Controller Errors or Sensor Errors