High Limit Sensor

Each spa is equipped with a thermistor that is used as temperature sensor. The thermistor is a semiconductor that changes resistance with temperature changes (as the temperature goes up, the resistance goes down). A comparator circuit then compares the voltage to the set point voltage. If the voltage differs the heating circuit is sent a signal to energize the heater system or terminate the system if voltage is equal to the set point. The set point is the spas default temperature (102Â°F) unless reset at the control panel's up or down temperature set buttons.

Specifications

Make	Model	Date Range
Caldera	Tahitian	2002-Current
Caldera	Niagara	2002-Current
Caldera	Geneva	2002-Current
Caldera	Cantabria	2009-Current
Caldera	Hawaiian	2002-2010
Caldera	Kauai	2013-2015
Caldera	Moorea	2006-2010
Caldera	Salina	2011-2015
Caldera	Makena	2013-2015
Caldera	Martinique	2013-2015
Caldera	Aspire	2004-2008
Caldera	Elation	2003-2010

Item	Description	Part #
1	Kit CBA Advent Orca Cal	76288
2	Kit Control Head Cal	76269
3	Clamp Romex 3/4"	30105
4	Plug Hole 0.875"	36043
5	Bushing Strain Releif 3/8"	30099
6a	Kit Pump Cord 14/4 2SPD STRS	72461
6b	Kit Pump Cord 14/3 1SPD STRS	72462
7	Strain Releif 3/8" 7k-2	30098
8	Cord Circ Pump	71434
9	Ozone Receptacle	72474
10	Thermistor Hi-Limit	72492
11	Thermistor Control	72493
12	Kit Heater Board Replacement	76071
13	Fuseholder	34506
14	Fuse 2 AMP 250V	34934
15	Program Jumper Shunt .100	36021
16	Kit 12C Comm Hub 8 Port	74150
17	Power Jumper 2 Pin	39192
18	Power Jumper 3 Pin	39193

Item	Decsription	Part #
1	Kit CBA Advent Cal	73181
2	Clamp Romex 3/4	30105
3	Plug Hole 0.3/8"	36043
4	Bushing Strain Relief 3/8"	30099
5a	Cord Assy Pump 14/4 Flag 60"	72461
5b	Cord Assy Pump 14/3 Flag 60"	72462
6	Strain Releif 3/8" 7K-2	30098
7	Cord Circ Pump Replacement	71434
8	Receptacle Assy Ozone	72474
9	Plug Hole 0.50"	36044
10	Thermostor Hi-Limit	72492
11	Thermistor Control	72493
*	Kit Heater Board Replacemnet	74618
*	Fuse Sloblo 1/2A 250V 5MM X 20MM	37089
*	Program Jumper Sgunt .100	36021
*	Kit Cable Assy Press Switch	72639
*	Fuseholder	34506
*	Fuse 2 Amp 250V	34934
*	Kit 12C Comm Hub 8 Port	74150

Item	Description	Part #
1	CONTROL BOARD,ADVENT ORCA 60HZ	77656
2	JUMPER, POWER 2-PIN T-BLOCK	39192
3	JUMPER, POWER 3-PIN T-BLOCK	39193
4	HEATER RELAY BOARD, ORCA 50/60	77118
5	STRAIN RELIEF, METAL CLAMP	30105
6	PLUG, 0.875" HOLE	36043
7	STRAIN RELIEF, SMALL CIRC PUMP STRAIN RELIEF, MEDIUM JET PUMP	30098 30099
8	FUSE, 2A 250V SLO BLO	34934
9	FUSE HOLDER, CONTROL BOX 60HZ	34506
10	I2C COMM, 5-PORT	74150
11	THERMISTOR, CONTROL BULLET	72493
12	THERMISTOR, HI LIMIT ADVENT	72492
13	JUMPER, PROGRAM 2-PIN	36021

Questions

Serial Number Verification

72492 High Limit Sensor 2002-Current