Thermistor, Control & Hi-Limit Sensor Kit, After Market

Sku: 34-01395-K
$61.54

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 inside the control box. Adapters are included if you have an older style control box.

This part can be found on
Hot Spring ARN, GGN, IIN, JJN, JTN, KKN from 2022 to 2023.
Limelight BMI, FLR, FSH, PLS, PSM from 2022 to 2023.

View Diagrams & Part Compatibility

Description

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 inside the control box. Adapters are included if you have an older style control box.

Note: ALWAYS REPLACE THE THERMISTORS IN PAIRS. If a new thermistor differs in temperature sensing more than five degrees from the old thermistor, the system will go into a “fault mode” and prevent the heater, jet pump(s) and light from operating. So again, when replacing a control thermostat thermistor always replace the high limit thermistor as well and vice versa.

*If your heater looks like one of these discontinued heaters below, use 34-01395-K:
Used 1997-2003 Used 1997-2003
Hot Spring only
(No-Fault 6000)
Both Hot Spring
& Tiger River
(No-Fault 4000 & 6000)

Test Procedure
1. Set the meter to 20K on the OHM scale.
2. Record the temperature of the spa water.
3. Unplug the thermistor from the control box.
4. Meter across the two Thermistor leads.
5. Refer to the Temperature versus Resistance chart below to find the correct resistance value for the temperature measured. If the temperature and resistance does not match that of the chart, this test has failed and the thermistor must be replaced. Remember if the spa has been inactive, the spa water temperature may be different than the water temperature in the heater housing.

Click this chart to show the OHM range of the thermistor

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Ref. Diagram
Thermistors (PUG, ORCA, and EAGLE Compatible) (Hot Spring 2022 - 2023) View Diagram
# 8 PDR Heater (Hot Spring 2022 - 2023) View Diagram
# 5 EAGLE Control Box Retrofit Upgrade (Hot Spring 2022 - 2023) View Diagram
brand model years
Hot Spring Aria NXT (ARN) 2022, 2023
Hot Spring Grandee NXT (GGN) 2022, 2023
Limelight Beam I (BMI) 2022, 2023
Limelight Flair (FLR) 2022, 2023
Limelight Flash (FSH) 2022, 2023
Limelight Pulse (PLS) 2022, 2023
Limelight Prism (PSM) 2022, 2023
Hot Spring Sovereign (IIN) 2022, 2023
Hot Spring Jetsetter LX (JTN) 2022, 2023
Hot Spring Jetsetter (JJN) 2022, 2023
Hot Spring Envoy NXT (KKN) 2022, 2023

Thermistor Resistance vs Temperature Chart PDF

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