💡 Balboa® Lite Leader Circuit Board — 54152 (with 115V Plug) — HydroQuip 7100B / Silver-B Series

Balboa® Lite Leader replacement PCB for HydroQuip 7100B and Silver-B Series spa control systems.

⚠️ IMPORTANT — DISCONTINUED PRODUCT

The original Balboa Lite Leader circuit board (54152) is obsolete and discontinued. New stock may be available on a limited basis while supplies last, but this board is no longer in regular production. If you need a drop-in board replacement, confirm availability with Parts4Tubs before ordering.

For a full system upgrade: The recommended modern replacement for the Lite Leader platform is the Gecko in.yj-3 V3 complete control system — a fully featured spa control pack that includes a 4.0kW heater, in.k336 topside, and in.touch 3 Wi-Fi module. This is a complete system replacement, not a board-only swap. Contact Parts4Tubs for details on whether a system upgrade is appropriate for your spa.

Non-returnable. Circuit boards cannot be resold once purchased. Confirm availability and compatibility before ordering.

📋 Product Overview

The Balboa® Lite Leader circuit board (part number 54152) is the version of the Lite Leader PCB fitted with an integrated 115V/120V plug. It is used in HydroQuip 7100B Series and Silver-B Series spa control systems, including the CS7100B, CS7109B, and related systems.

The Lite Leader platform is a basic single-pump 120V control board designed for entry-level portable hot tubs. The 54152 variant includes the built-in 115V/120V power plug, distinguishing it from the 54115 which does not have the plug. The board connects to the topside via a 6-pin phone cable and supports a 2-speed pump, ozonator, and spa light. Air blower output is not supported on this platform.

The chip number for the 54152 is LTLDBLR1A. Balboa chip identification is mandatory — always verify the chip number on your existing board before ordering any replacement.

✨ Key Features

✅ Balboa® OEM PCB — for HydroQuip 7100B and Silver-B Series spa control systems
✅ Part Number: 54152 — Lite Leader with 115V/120V integrated plug
✅ Chip Number: LTLDBLR1A
✅ 2-Speed Pump 1 (P1) output — primary jet pump control
✅ Ozonator output
✅ Spa Light output
✅ 6-pin phone cable topside connection
✅ 115V/120V — standard US residential voltage
✅ Compatible with Lite Digital topside panel (58-138-1160)

⚠️ Air blower output is NOT supported on this board.

⚠️ This board is discontinued/obsolete. Confirm availability before ordering. Contact Parts4Tubs for upgrade options if stock is unavailable.

🔩 Technical Specifications

Specification	Value
Part Number	54152
Chip Number	LTLDBLR1A
Board Series	Balboa Lite Leader
Distinguishing Feature	Includes integrated 115V/120V power plug
Voltage	115V / 120V (60Hz)
Primary Pump (P1)	2-Speed
Secondary Pump (P2)	Not supported
Blower	Not supported
Ozone	Supported
Spa Light	Supported
Topside Connector	6-pin phone cable
Compatible Topside	Lite Digital (6-conductor) — see PN below
Availability	Discontinued / obsolete — limited stock only
Warranty	1-year limited manufacturer’s warranty
Returns	Non-returnable

🔗 Compatibility Guide

Compatible HydroQuip Control Systems:

System	Notes
HydroQuip CS7100B-U-WP	7100B Series Silver-B
HydroQuip CS7100B-U-4.0-WP	7100B Series Silver-B
HydroQuip CS7100B-U-15A-WP	7100B Series Silver-B
HydroQuip CS7109B-US	7100B Series
HydroQuip CS709B-US-4.0	7100B Series
HydroQuip CS7109B-US-15A	7100B Series
HydroQuip Silver-B	Silver-B Series
Balboa control boxes	54114, 54114-H, 54114-HC, 54114-NC, 54114HC1, 54116, 611543

⚠️ Always verify your existing board’s chip number before ordering. Many Balboa boards look alike but are programmed differently. The chip number (LTLDBLR1A for the 54152) is the definitive identifier.

Compatible Topside Panel:

Part Number	Description
58-138-1160	Panel, Lite Digital (6-conductor), 7ft Cord
58-138-1162	Panel, Lite Digital (6-conductor) — alternate cord length
51705	Balboa Topside Panel (earlier PN)
34-0229-K	ECO-LL Series Topside

Cross-Reference / Also Known As:

Part Number	Description
54115	Standard Lite Leader (no integrated plug)
33-0031-K	HydroQuip PN for Lite Leader replacement
33-54115-K	Balboa PN variant
3-60-0054HQ	Cross-reference
52935, 52936	Earlier Lite Leader boards
610993	Cross-reference
9710-18	Cross-reference
BAL54115	Balboa catalog PN
C1500-1	Cross-reference
ELE09102220	Cal Spas PN cross-reference
LITELDR1A	Chip cross-reference
LTLDBLR1A	This board’s chip (54152)

Recommended Accessories:

Part Number	Description
59-138-1060	Sensor, BWG, 96″ Temp 3/8″ dia, 31″ Hi-Limit, 1/4″ dia, 4-pin
60-155-1005	Surge Protector, Intermatic, 115V/230V

⚠️ Discontinued Status — What Are Your Options?

The 54152 Lite Leader is discontinued. Depending on your situation, there are several options:

Option 1 — Buy while stock lasts: If the 54152 is still in stock at Parts4Tubs, this is the simplest repair. Contact us to confirm availability before ordering.

Option 2 — Alternative Lite Leader board (33-0031-K / 54115): The 33-0031-K (HydroQuip PN) or 54115 (Balboa PN without the integrated plug) may still be available and is a compatible board for the same 7100B/Silver-B platform. Note that the 54115 does not include the 115V plug — confirm wiring compatibility before ordering this alternative.

Option 3 — Full system upgrade (Gecko in.yj-3 V3): For spas where no board replacement is available, the Gecko in.yj-3 V3 is a modern complete control system that represents a significant upgrade. It includes a 4.0kW heater, in.k336 topside, and in.touch 3 Wi-Fi module. This is a full spa pack replacement — not a drop-in board swap. Please note: the in.yj-3 ships configured for 230V appliances; conversion is required for 115V appliances. Contact Parts4Tubs for guidance.

Contact Parts4Tubs with your spa make, model, and existing board chip number for personalized advice on the best option for your situation.

🔌 Installation Requirements

⚠️ Installation must be performed by a licensed electrician in compliance with NEC and all applicable local codes.

Pre-Installation Checklist:

• [ ] Confirm existing board chip number is LTLDBLR1A (54152) or equivalent
• [ ] Confirm system is HydroQuip 7100B, Silver-B, or compatible Balboa Lite Leader system
• [ ] Confirm voltage is 115V/120V — do not install in 240V systems
• [ ] Confirm topside is Lite Digital 6-conductor (58-138-1160 or 58-138-1162)
• [ ] Disconnect all power at GFCI breaker or service disconnect
• [ ] Photograph all wiring before removal

Electrical Requirements:

Requirement	Specification
Supply Voltage	115V / 120V / 60Hz
GFCI	Class A GFCI required — NEC Article 680
Ground & Bonding	Required — NEC Article 680
Dedicated Circuit	Required
Disconnect Box	Within line of sight of spa, at least 5 ft away
Wire Type	Copper conductors only

🛡️ Safety Warnings

• ⚠️ ALWAYS disconnect all power before circuit board work
• ⚠️ Licensed electrician installation required; NEC Article 680 compliance mandatory
• ⚠️ GFCI required; grounding and bonding required per NEC Article 680
• ⚠️ 115V/120V only — do not install in 240V systems
• ⚠️ Always verify chip number before ordering — boards that look identical may have different programming
• ⚠️ Damage from incorrect installation is NOT covered under warranty
• ⚠️ Non-returnable — verify availability and compatibility before ordering

❓ Frequently Asked Questions

Q: What is the difference between the 54152 and the 54115? A: The 54152 is the Lite Leader board with an integrated 115V/120V power plug built into the board. The 54115 is the standard Lite Leader board without the integrated plug. Both are for the same 7100B/Silver-B platform and have the same functionality, but the plug configuration differs. Always confirm which version your system uses before ordering.

Q: Is this board still available? A: The 54152 is discontinued. Limited stock may remain — contact Parts4Tubs to confirm current availability before ordering.

Q: What chip number should I look for on my existing board? A: For the 54152, the chip number is LTLDBLR1A. The chip number is located on a white sticker on the logic chip near the center of the board. This number must be used to correctly identify the board — do not rely on appearance alone.

Q: Can I use the 33-0031-K or 54115 as a replacement for the 54152? A: The 33-0031-K and 54115 are for the same Lite Leader 7100B platform and share the same chip family. However, the 54115/33-0031-K does not include the integrated 115V plug. Whether this is a compatible replacement for your installation depends on your system’s wiring. Contact Parts4Tubs for confirmation.

Q: What is the Gecko in.yj-3 V3 upgrade option? A: The Gecko in.yj-3 V3 is a complete modern spa control system that can replace an aging Lite Leader system. It includes a 4.0kW heater, in.k336 topside, and in.touch 3 Wi-Fi module — substantially more capability than the original Lite Leader. However, it ships configured for 230V appliances and requires conversion for 115V use. It is not a simple board swap; it is a full control system replacement. Contact Parts4Tubs for guidance.

Q: What warranty is included? A: 1-year limited manufacturer’s warranty. Damage from incorrect installation is not covered. Circuit boards are non-returnable.

✅ Why Parts4Tubs for the Lite Leader 54152

✅ Honest availability — we confirm stock before you order
✅ Can advise on alternative board options (33-0031-K, 54115)
✅ Can advise on full system upgrade path (Gecko in.yj-3 V3) if board is unavailable
✅ Compatible accessories available — Lite Digital topside, sensor kit, surge protector
✅ Fast US shipping

⚡ Summary

The Balboa® Lite Leader circuit board (54152) is the 115V/120V plug-equipped variant of the Lite Leader PCB for HydroQuip 7100B and Silver-B Series spa control systems. Chip number LTLDBLR1A. It supports a 2-speed pump, ozonator, and spa light — blower is not supported. Connection to the topside is via 6-pin phone cable; compatible with the Lite Digital topside (58-138-1160). This board is discontinued and obsolete. If the 54152 is unavailable, the 33-0031-K/54115 (without plug) is a possible alternative for the same platform, and the Gecko in.yj-3 V3 is the recommended full-system upgrade path for the Lite Leader platform. Contact Parts4Tubs to confirm availability and the best option for your spa.

Finding and identifying a replacement Hot Tub Circuit Board (PCB)

If you are looking to replace a failed PCB on your Hot Tub’s spa pack, then quite often identifying the part that you need can be the hardest thing.

Firstly, you are looking for a model number on the actual circuit board itself. Having the model or serial of your hot tub is not going to help at this point, you need to find the number on the PCB itself.

Now, with certain brands of PCB, the number of the replacement PCB that you need is not going to match identically the one you are replacing. Why is that I hear you ask?

Well, normally, it is an updated version. This means that it might have updated firmware on the PCB or be a later revision. Normally, this means that the part number would be slightly different. This is usually indicated with a “12345678 -x” at the end of that part number where x indicated a firmware revision.

In some cases, there will be some following letters on the part number of the circuit board, “12345678 -x MAS” this can indicate that the PCB was used for an OEM meaning it was produced for a certain hot tub manufacturer and the letters identify the manufacturer.

This means if you source an original PCB, it will not have the letters, but will in most cases work just fine.

It can be confusing I know!

What if you can’t find a model number?

If you can’t find a model number on the PCB itself, then you need to look for a model number on the spa pack. Normally, there is a sticker on the outside of the spa pack that tells you the current ratings and input voltages etc and this will have a model number.

In general, most spa packs in the USA are manufactured by Balboa, Hydro-Quip, ACC or Gecko. I know I am generalising here, but if you have a spa pack that has the brand of your hot tub on, it will be an OEM so the key is identifying who made the original box.

From there, you can normally find an original PCB that you will be able to switch out.

For example, the Balboa VS (value series) is a very popular spa pack that has been used by multiple hot tub manufacturers under their own brand names. Whatever they have called it, strip it back and it is still a Balboa VS.

Visual Inspection

One of the most important things you can do when you are looking for a replacement is to visually inspect the PCB that you have versus the picture online of the replacement you are considering. They need to look the same even if there are the differences in firmware revisions or OEM part numbers, you should be visually replacing a PCB that looks like the one you have.

Configuring a replacement Hot Tub Circuit Board (PCB)

When you get a new PCB, you are more than likely going to need to configure it. Most PCBs have a number of different modes and setups that the can operate in. For this, you will need to manual or spec sheet to guide you.

For things like DIP switches, most of the time you can copy the settings from your original circuit board. You are looking for things like setting the voltage as a lot of PCBs can be configured to run on both 115V and 230V.

You may need to move jumpers or even wires to configure voltages – the key here is that you read the schematic and don’t expect the PCB to just work out of the box – it usually doesn’t.

Troubleshooting a Hot Tub Circuit Board (PCB)

Here are some common things you will see when you replace a PCB on a hot tub.

You press the buttons on the topside control and they don’t control the right parts (pumps or blower etc) – this is a mode configuration thing and you will either need to change some DIP switches on the PCB or an internal or low level programming mode on the topside control. Check the manual for how to do this.

You turn on the hot tub and it trips the breaker – it is not common for a new PCB to fail out of the box (I have not seen one yet!) However, a common mistake is that the voltage has not been set correctly. If it is set for 115V and then you try and turn it on, the current draw will be a lot more (twice) than expected and the breaker will trip.

To check this, unplug all of your kit – heater, pumps, blower and then turn on the PCB. If it trips with nothing plugged in, usually the voltage is incorrectly set and what is happening is that live current is being sent to the ground – because you have 4 wires into the PCB rather than 3. Current on the ground loop causes the trip. Check the settings to make sure it is configures for 230V.

It might not trip until you physically turn on a pump or a blower. As mentioned, if the pack is set to 115V and your pump is meant for 230V, it will draw twice the current at half the voltage and trip your breaker. Check the manual for info on how to set the voltage.