I would like to express how excellent this company is. I inherited a house with a 2007 Hotspring Aria hot tub. The spa hasn’t been operated in years and when I turned it on, it ran for about 10 minutes and died. I mean dead died. I knew absolutely nothing about hot tubs but with the excellent diagnosis videos, installation videos and superior phone support, I was able to replace the main control board, heater relay board, heater, circulation pump, the ozonator and all associated tubing. This took 4 1/2 hours over two days (I had to watch videos) but the spa runs like new! I had one question regarding the jumper voltage 18 or 12. I spoke with a technician and he was able to answer my question as well as helping me double check the voltages for the components on the relay board. I am handy with electronics and electricity and am comfortable working with 230 volts. Shipping was fast and as expected. I highly recommend BackYardPlus.On 06/28/2024 by F. R. (verified customer)
These control boxes and their circuit boards do on occasion just grow tired as any outdoor computer could. No worries, we have just the right complete factory replacements as well as the internal parts all from the makers of Hot Spring, Tiger River, Solana, Limelight, and Hot Spot Spas.
Showing 1–30 of 36 results
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Replaces the obsolete 39525 and obsolete 39204 Newly designed and includes o-ring This high-limit thermistor sensor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 ...read more
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Sku: 79006
Thermistor, Control Thermostat, Watkins No Fault Heater, Hot Spring, Tiger River and Limelight
Replaces the obsolete 39530 and obsolete 39205 Newly designed and includes o-ring This control thermistor is a safety device that measures the water temperature of your spa and communicates that temperature reading to the Motherboard It simply screws ...read more -
Replaces 38415 Newly designed and includes o-ring This control thermostat thermistor sensor detects the spa waters temperature and relays that information back to the system It simply screws into the No Fault Heater Housing (hand tight only) and plugs ...read more
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Replaces 38416 Newly designed and includes o-ring This high-limit thermistor sensor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 degrees F It simply screws ...read more
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This newly designed high limit thermistor replaces the original black plastic-tipped version It is a safety device that will shut down power to the spa if the water temperature exiting the heater is too hot This would indicate a "low water flow" condition ...read more
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This Control Thermostat Thermistor communicates the actual water temperature to the controller (control box motherboard) to shut off the heater when the spa reaches the target temperature It is used on all 73859, 72469, 76840 and 76091 control boxes
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Sku: 34-01395-K
Thermistor, Control & Hi-Limit Sensor Kit, After Market
The after-market thermistor kit (1 control and 1 hi-limit sensor included with o-rings as well as adapters) that fit with either the 4kW or 6kW after-market PDR Titanium double-barrel heater These sensors can plug in directly to the motherboard located ...read more -
Sku: 30-01395-K
Thermistor Adapters, After-Market
The after-market thermistor adapters work to allow the after-market thermistors to connect to the outside of the control box instead of connecting directly to the motherboard of the control box -
This control thermostat was mounted in the control box directly behind the temperature dial on all Hot Spring models from 1989-1993 It was mounted on the under the top-side control panel on all Tiger River models from 1992-1994
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This is the after-market replacement thermistor for the 1999-2002 Hot Spot RE, RLX, SE, SLX, and the 2001-2002 SLXtra (wood-sided) spa models Also the Solana 2000-2002 X, 2003-2005 RX, SX, and TX models This thermistor communicates the actual water ...read more
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This is the replacement thermistor for the 1999-2002 Hot Spot RE, RLX, SE, SLX, and the 2001-2002 SLXtra (wood-sided) spa models Also the Solana 2000-2002 X, 2003-2005 RX, SX, and TX models This thermistor communicates the actual water temperature to the ...read more
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Sku: 10489
Bridge Wave Rectifier
This rectifier was used on the 1990-1993 Hot Spring Classic, Sovereign, Prodigy, Jetsetter, Highlife and Grandee, 1994 Tiger River Khyber and the 1993-1994 Hot Spot Z model -
Sku: 33249
Thermostat, Control, Hot Spot
This Control Thermostat is the replacement for the 1993-1994 Hot Spot Z (round spa) spa model -
Sku: 33229
Air Switch (Latching), Hot Spot
This latching air switch was used for two different purposes on Hot Spot spa models In 1993-1994 is was used as a jet activation switch In 1995-1998 it was used as a light activation switch It is connected with a clear vinyl tube to the air button located ...read more -
This 12Volt DC PWA Switch Relay controls the low-speed pump when the thermostat calls for heat on the 1995-1997 Hot Spot Z (round) and Y (rectangle shape) spa models Note: There should be 10v -19v DC between the two red wires coming from the thermostat in ...read more
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The jet switch is located in the control box of all 1995-1998 Hot Spot spa models It is connected with a clear vinyl tube to the air button located on the bartop of the Hot Spot models Once the air button is depressed a puff of air activates this switch In ...read more
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Sku: 33920
Timer Chip, 10 Min. Delay, Hot Spot
The 10 Minute Timer Delay is designed to cause the "heating mode" in the 1993-1994 Hot Spot Z model (round spa) to wait for 10 minutes before engaging This device is utilized whenever the spa is powered up or when the spa's jet pump is turned off This gives ...read more -
The circulation pump timer board operates the "Summer Timer" mode in the 120 volt 1996 Hot Spring and Tiger River spas
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Sku: 008019
Sensor Set, Oasis
High-limit and control thermostat sensor set for the Oasis spa models -
Sku: 39204
Thermistor, High-Limit, Hot Spring, Tiger River, Limelight
This item is obsolete and replaced by:
79005This high-limit thermistor sensor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 degrees F It simply screws into the No-Fault Heater Housing (hand tight only) and ...read more -
Sku: 39205
Thermistor, Control Thermostat, Hot Spring, Tiger River and Limelight
This item is obsolete and replaced by:
79006This control thermostat thermistor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 degrees F It simply screws into the No-Fault Heater Housing (hand tight only) and ...read more -
Sku: 38415
Thermistor, Control Thermostat, Hot Spring and Tiger River
This item is obsolete and replaced by:
78970This control thermostat thermistor sensor detects the spa waters temperature and relays that information back to the system It simply screws into the No Fault Heater Housing (hand tight only) and plugs into the outside of the spa's control box If your ...read more -
Sku: 38416
Thermistor, High-Limit, Hot Spring and Tiger River
This item is obsolete and replaced by:
78969This high-limit thermistor sensor is a safety device designed to communicate with the system to shut down the heater if the water temperature exiting your heater exceeds 118 degrees F It simply screws into the No-Fault Heater Housing (hand tight only) and ...read more -
Cool gray temperature sensor fitting
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OBSOLETE This is the replacement thermistor for all 1994 Hot Spring spa models and 1995-1998 Hot Spot RE, RLX, SE & SLX spa models This Control Thermostat Thermistor communicates the actual water temperature to the controller to shut off the heater ...read more
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Obsolete: No factory suggested replacement available at this time Please contact our technicians for advice (805) 541-9000 or wizard@backyardplus com This PWA: Interlock Timer Circuit Board is the factory replacement for all 1994-1996 Hot Spring Classic, ...read more
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OBSOLETE This Electronic Control Thermostat (thermistor included) replaces the mechanical thermostats in the 1994 Hot Spring Classic, Grandee, Highlife, Jetsetter, Prodigy, and Sovereign spa models This retrofit remedy was introduced to solve the ...read more
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OBSOLETE-Use 39205 This control thermostat thermistor sensor detects the spa water's temperature and relays that information back to the system It simply screws into the No-Fault Heater Housing (hand tight only) and then plugs directly onto the ...read more
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Sku: 37870
GFCI Inline, 15A. 115v. with 90 Degree Plug End
This item is obsolete and replaced by:
1386701OBSOLETE-Use the 1386701 This 15amp GFCI is molded onto the power cord and has a 90-degree plug end Used on various 15 amp Hot Spot and Solana spa models
Showing 1–30 of 36 results