🔧 Gecko Aqua-Flo Flo-Master FMHP Spa Pump – 1.0 HP 2-Speed 115V (02110000-1010)

Whisper-quiet operation with exceptional jet power for the ultimate spa experience

💧 Product Overview

The Gecko Aqua-Flo Flo-Master FMHP (02110000-1010) is a high-performance, side discharge jet pump engineered for portable spas, hot tubs, and whirlpools. Rated at 1.0 operational horsepower (1.5 total HP), this 2-speed pump operates on 115V/60Hz and delivers flow rates that exceed all tested competition, thanks to its unique high-performance impeller design.

Built on the proven 48-frame thru-bolt platform, the FMHP provides powerful hydrotherapy jets on high speed and energy-efficient filtration on low speed. The compact design with 1-1/2″ Male Buttress Thread (MBT) connections and included quick-release compression fittings ensures straightforward installation and broad compatibility across dozens of spa brands. With reinforced engineered plastic construction, stainless steel volute fasteners, and a long-life mechanical shaft seal, this pump is built for years of reliable, trouble-free service.

⭐ Key Features

• ✅ 1.0 Operational HP / 1.5 Total HP – Powerful motor delivers strong jet performance for multi-jetted spas
• ✅ 2-Speed Operation – High speed for powerful hydrotherapy jets, low speed for energy-efficient filtration and circulation
• ✅ Side Discharge (FMHP) – Offset discharge position on the right side of the wet end for specific plumbing configurations
• ✅ 48-Frame Thru-Bolt Design – Industry-standard compact mounting for broad spa compatibility
• ✅ 115V / 60Hz – Standard North American residential voltage
• ✅ High-Performance Impeller – Unique design providing flow rates that exceed all tested competition
• ✅ Quick-Release Compression Fittings – Two included unions for easy, tool-free installation and maintenance
• ✅ Long-Life Mechanical Shaft Seal – Compact, unitized, single spring elastomer bellows design (PS-200 / #200) for maximum durability
• ✅ Built-in Overload Protection – Motor thermal protection for safe operation
• ✅ Reinforced Engineered Plastic Construction – Durable volute and wet end components
• ✅ Stainless Steel Volute Fasteners – Corrosion-resistant hardware for long service life
• ✅ California Title 20 Compliant – Meets energy efficiency standards

⚙️ Technical Specifications

Specification	Value
Pump Model	Flo-Master FMHP
Manufacturer	Aqua-Flo by Gecko Alliance
Part Number	02110000-1010
Pump Type	Jet Pump – Side Discharge
Operational Horsepower	1.0 HP
Total Horsepower	1.5 HP
Speed Settings	2-Speed
Voltage	115V
Frequency	60 Hz
Amperage (High Speed)	9.8A (see amperage note below)
Amperage (Low Speed)	3.8A (see amperage note below)
Motor Frame	48-Frame Thru-Bolt
Suction Port Size	1-1/2″ MBT
Discharge Port Size	1-1/2″ MBT
Suction Style	Center
Discharge Style	Side (offset)
Thread Outside Diameter	Approximately 2-3/8″
Connection Type	Male Buttress Thread (MBT), Female Pipe Thread (FPT)
Drain Plug Location	6, 9 o’clock
Unions Included	Yes – 2 quick-release compression fittings
Power Cord Included	No – sold separately
Impeller Part No.	91693601 (1.0 HP)
Volute Part No.	92770501 (FMHP Series)
Seal Part No.	92500150 (#200)
Wet End Assembly Part No.	91040700-000 (1.0 HP)
California Title 20	Compliant

⚠️ Amperage Note: OEM pump manufacturers may change motor styles without notice. The listing amperage is 9.8/3.8A per Parts4Tubs and SpaParts.com product titles. Some authorized sources list 9.5A/3.2A in their detailed specifications. Minor amperage variations are normal between motor production runs. Always verify the actual amp rating on the motor nameplate after delivery.

⚡ Electrical Requirements

Electrical Spec	Requirement
Supply Voltage	115V
Frequency	60 Hz
Phase	Single
Amperage (High Speed)	9.8A
Amperage (Low Speed)	3.8A
Bonding Wire	No. 8 AWG (8.4 mm²) solid copper conductor

⚠️ IMPORTANT ELECTRICAL SAFETY INFORMATION:

• All electrical work must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and local building codes.
• This pump must be connected to a circuit protected by a GFCI (Ground Fault Circuit Interrupter).
• A dedicated circuit is required – do not share with other appliances.
• The motor must be bonded with no smaller than a No. 8 AWG (8.4 mm²) solid copper conductor to all metal parts of the spa structure and to all electrical equipment, metal conduit, and metal piping within 5 feet (1.5 m) of the inside walls of the spa.
• Before working on any motor, be certain that the source of electrical power is OFF at the main junction box.
• For electrical connections, see the wiring diagram on the motor rating plate.

🔗 Compatibility Guide

Frame Dimensions (48-Frame Standard):

Measurement	Value
Bolt Spacing (Between)	3-5/8″
Bolt Pattern (X-Pattern)	5-3/16″
Bolt Head Size	1/4″
Port Thread OD	Approximately 2-3/8″

This Pump:

• 📍 Frame: 48-Frame Thru-Bolt
• 📍 Wet End: 1-1/2″ MBT
• 📍 Discharge: 1-1/2″ MBT – Side (offset) discharge
• 📍 Suction: 1-1/2″ MBT – Center suction

⚠️ FMHP vs. FMCP – Critical Difference:

The FMHP features side (offset) discharge where the pressure output is positioned on the right side of the wet end. The FMCP features center discharge where the pressure output is in the dead center of the top of the wet end. Always verify your existing pump’s discharge position before ordering. These wet ends are NOT interchangeable without replumbing.

Replaces the Following Part Numbers:

• 3420410-0Z
• 5121-100
• 612647
• AF021100001010
• R55MWFBJ-0280
• 02010000-1010 (1-speed version)
• 02010000-1
• 02010422-5
• 02110000-1010HZW (Century motor version)
• 02110000
• 02110612-1
• 02110419-2
• 03110009-5
• 1-00-0208
• GK020100001010
• 34-402-5002

Also Replaces (Watkins/Caldera):

• 1431501-01
• 1431501-03
• M5123
• AF11575-SS
• AE11575-SS
• AF11510
• AE11510 (1.0HP or 1.5HP SPL 110V)

Wet End Only Replacement:

• 91040690-000 (wet end only)
• 91040700-000 (wet end only – 1.0 HP)

💡 Note: This FMHP pump is also the replacement option for the “Relia-Flo” pumps by Caldera Spas. Verify motor amp rating, voltage, and discharge type and fitting size to match.

💡 HP Rating Note: In 2012, Gecko Alliance changed the way Aqua-Flo pumps are rated. Pumps are now assigned both an operational horsepower (OHP) and a total horsepower (THP) rating. Previous versions used only the operational horsepower. If you are replacing an older Aqua-Flo pump, match the operational HP rating (1.0 HP) rather than the total HP (1.5 HP).

🛠️ Installation Requirements

Mounting:

Requirement	Specification
Installation Type	Below water level (flooded suction)
Base	Solid, level surface
Access	Adequate access around pump for inspection and maintenance
Ventilation	Keep motor vents clear of debris and obstructions

Plumbing:

Connection	Size
Suction	1-1/2″ MBT (center)
Discharge	1-1/2″ MBT (side/offset)
Union Type	Quick-release compression fittings (2 included)

Installation Notes:

• ⚠️ Pump must be installed below water level (flooded suction) – ensure the pump casing (volute) is completely filled with water
• ⚠️ Never run pump dry – always ensure the pump casing is filled with water before starting
• ⚠️ Hand tighten compression fittings only – do not use a wrench to tighten fittings
• ⚠️ Ensure fittings are correctly aligned with pump connections to allow the o-ring to make a proper seal
• ⚠️ Ensure proper grounding and bonding per NEC requirements
• ⚠️ GFCI protection is required by code
• ⚠️ Power cord is sold separately – compatible cords include 30-1001C (2-speed AMP pump cord) or 30-0220-48 (molded pump cord)
• ⚠️ Motor may or may not have a run capacitor mounted on top – allow clearance for a capacitor approximately 6″ long x 2.5″ tall x 2.25″ wide
• 💡 The wet end can be rotated for flexible plumbing configurations

🔄 Maintenance Guide

Routine Maintenance:

Task	Frequency	Notes
Inspect trap basket	Frequently	Keep clean; do not strike basket when cleaning
Inspect trap cover o-ring	Regularly	Replace as necessary
Check for leaks at unions	Monthly	Ensure compression fittings are properly aligned and secured
Keep motor vents clear	Quarterly	Ensure louvered openings are free from debris and obstructions
Inspect shaft seal	Periodically	Replace if worn or damaged
Check mounting bolts	Quarterly	Tighten if loose

Warning Signs – Replace Pump If:

• Unusual noise (grinding, screeching, humming without starting)
• Water leaking from shaft seal area
• Motor trips breaker repeatedly
• Reduced water flow despite clean filter
• Motor overheating and cycling on and off

Seal Replacement:

• 📍 Seal Type: PS-200 (#200) – Single spring elastomer bellows mechanical seal
• 📍 Seal Part Number: 92500150
• ⚠️ It is advisable to replace the complete seal assembly (both the ceramic and carbon sides) every time the pump is disassembled
• ⚠️ Clean ceramic and carbon ring surfaces with alcohol wipes or isopropyl alcohol with clean lint-free soft cloth if reusing

Winterization:

• Disconnect all electrical power
• Drain thoroughly and clean out any debris
• Protect pump and motor from elements by covering or store in a dry, well-ventilated room

🎯 Ideal Applications

Application	Suitability	Notes
♨️ Hot tub jet pump	Yes	Primary application – designed for multi-jetted portable spas
♨️ Spa circulation (low speed)	Yes	Low speed provides efficient filtration and water circulation
🛁 Whirlpool bath	Yes	Suitable for whirlpool applications requiring side discharge
♨️ Above ground pool	Yes	Can be adapted for above ground pool applications

❓ Frequently Asked Questions

Q: What horsepower is this pump? A: This pump is rated at 1.0 operational horsepower (OHP) and 1.5 total horsepower (THP). When replacing an older Aqua-Flo pump, match the operational HP rating.

Q: Will this fit my hot tub? A: This pump has a 48-frame thru-bolt design with 1-1/2″ MBT connections and side (offset) discharge. Check your existing pump’s frame type, port size, and critically, the discharge position (side vs. center) before ordering.

Q: What is the difference between FMHP and FMCP? A: The FMHP has side (offset) discharge – the pressure output is on the right side of the wet end. The FMCP has center discharge – the pressure output is dead center on top. These are not interchangeable without replumbing. Always match the discharge position of your existing pump.

Q: What voltage does this pump require? A: 115V / 60Hz. All electrical installation must be performed by a licensed electrician. Using the wrong voltage will damage the motor.

Q: Is a power cord included? A: No, the power cord is sold separately. You can reuse your existing cord or purchase a compatible cord such as the 30-1001C (2-speed AMP pump cord) or 30-0220-48 (molded pump cord).

Q: What size are the ports? A: Both suction and discharge are 1-1/2″ Male Buttress Thread (MBT). The threads measure approximately 2-3/8″ outside diameter.

Q: Is this a single or dual speed pump? A: This is a 2-speed pump. High speed powers the jets for hydrotherapy; low speed provides energy-efficient filtration and circulation.

Q: What seal does this pump use? A: The PS-200 (#200) seal, part number 92500150. This is a compact, unitized, single spring elastomer bellows mechanical seal.

Q: Can this pump replace my 1-speed FMHP pump? A: Yes. The 2-speed 02110000-1010 replaces the discontinued 1-speed 02010000-1010. A 2-speed pump can also be operated as a single speed where the low speed is simply not used.

Q: Does this pump replace Caldera “Relia-Flo” pumps? A: Yes, this FMHP pump is a replacement option for Relia-Flo pumps by Caldera Spas. Verify the motor amp rating, voltage, and discharge type before ordering.

Q: Do I need a GFCI breaker? A: Yes, GFCI (Ground Fault Circuit Interrupter) protection is required by the National Electrical Code (NEC) for all hot tub and spa installations.

Q: What replacement parts are available for this pump? A: Key replacement parts include: Impeller 1.0HP (91693601), Volute FMHP Series (92770501), Seal #200 (92500150), Wear Ring (92830062), Suction Cover FMHP (91231301), Complete Wet End 1.0HP (91040700-000), and O-ring Volute #158 (92200090).

Q: Will the motor have a capacitor on top? A: OEM pump manufacturers may change motor styles without notice. The pump may ship with or without a run capacitor mounted on top of the motor. Allow clearance for a capacitor approximately 6″ long x 2.5″ tall x 2.25″ wide under your spa cabinet.

Q: How do I know if my pump needs replacing? A: Signs include unusual noise (grinding, screeching), water leaking from the shaft seal, reduced water flow, the motor tripping the circuit breaker, or the motor overheating and cycling on and off.

📥 Downloads & Resources

📄 Flo-Master HP & CP Techbook (Installation & Operating Instructions) – Complete installation guide, assembly/disassembly instructions, troubleshooting, and replacement parts list

📄 Flo-Master HP & CP Owner’s Manual – Owner’s manual with safety instructions and maintenance procedures

🛡️ FMHP Replacement Parts Reference

Ref.	Part Number	Description
1	–	Motor
2	92770501	Volute, FMHP Series
3	92500150	Seal Replacement, #200
4	91693601	Impeller, 1.0 HP
5	92200090	O-ring, Volute, #158
6	92830062	Wear Ring
7	91231301	Cover, Suction, FMHP Series, Std Drain
7A	56910010	Replacement Kit Cover, Complete
8	99730050	Screw, #8-32 x 5/8″
9	92200120	O-ring, Pipe Plug, #011
10	92290015	Pipe Plug, 1/4″ NPSM
11	92200140	O-ring, #226
12	91431050	Fitting, Tail Piece, 1-1/2″
13	91431000	Fitting, Union Nut, 1-1/2″
14	52201000	Fitting, Compression, Complete, 1-1/2″
Q	91040700-000	Assembly, Wet End, Complete 1.0 HP

🔧 Troubleshooting Quick Reference

Problem	Possible Causes
Motor will not start	Check circuit breaker; check for incorrect or loose wire connections; verify correct power supply; check on/off switch is in “on” mode
Motor overheating and cycling	Check for incorrect or loose wire connections; check for low voltage supply (often caused by undersized wire); ensure motor gets fresh air supply and vents are unclogged
Motor hums but won’t start	Check for low voltage supply; ensure motor shaft turns freely; check for jammed impeller or obstruction in volute
Excessive noise	Check plumbing vibration and support; check for cavitation due to obstructed or undersized suction line
Pump won’t prime	Verify pump is at proper level; open air control valves to release air lock; ensure suction and discharge lines are clear and all valves are open; check for air leaks in suction line
Low water flow	Check for clogged plumbing lines; check for worn or damaged impeller; check for low voltage; check filter pressure gauge
Water leaks	Check shaft rotary seal for contamination or damage; check compression fittings alignment and tighten by hand only; check o-rings are properly seated

🏆 Why Choose the Gecko Aqua-Flo Flo-Master FMHP

• ✅ High-performance impeller providing flow rates that exceed all tested competition
• ✅ 2-speed operation for powerful jets and energy-efficient filtration
• ✅ Proven 48-frame design with broad compatibility across dozens of spa brands
• ✅ Long-life mechanical shaft seal for reliable, drip-free performance
• ✅ Built-in motor overload protection for safe operation
• ✅ Reinforced engineered plastic and stainless steel construction for durability
• ✅ Quick-release compression fittings for easy, tool-free installation
• ✅ California Title 20 compliant for energy efficiency
• ✅ Replaces 30+ discontinued and legacy part numbers including Caldera Relia-Flo pumps

🤝 Why Buy from Parts4Tubs

• ✅ US-based support for American customers
• ✅ Fast shipping across the United States
• ✅ Expert advice from spa and hot tub specialists
• ✅ Competitive pricing in USD
• ✅ Full warranty support
• ✅ Hassle-free returns
• ✅ Replacement seals, impellers, and wet end parts available
• ✅ Dedicated customer service team

✨ Summary

The Gecko Aqua-Flo Flo-Master FMHP (02110000-1010) is a 1.0 HP, 2-speed, 115V side discharge jet pump built on the industry-standard 48-frame platform. Featuring a high-performance impeller that outperforms the competition, quick-release compression fittings, and a long-life mechanical shaft seal, this pump delivers powerful hydrotherapy on high speed and efficient circulation on low speed. Compatible with dozens of spa brands and replacing 30+ legacy part numbers, it is the go-to replacement pump for side discharge applications. Order with confidence from Parts4Tubs.