Green RV Girard Tankless Water Heater GSWH-2

Introduction

The Green RV Girard Tankless Water Heater GSWH-2 is a revolutionary water heating solution designed specifically for recreational vehicles (RVs). This tankless water heater is engineered to provide hot water on demand, eliminating the need for a traditional tank. Launched in recent years, this product has quickly gained popularity among RV enthusiasts due to its efficiency, compact design, and energy-saving capabilities. The estimated price of the Green RV Girard Tankless Water Heater GSWH-2 is around $800-$1,000, making it a viable investment for those seeking to enhance their RV experience.

The primary purpose of this water heater is to deliver a continuous supply of hot water without the space and energy requirements of a traditional tank-style heater. It is ideal for RV owners who want to enjoy the comforts of home while on the road. With its advanced technology and eco-friendly design, the Green RV Girard Tankless Water Heater GSWH-2 is a game-changer in the world of RV accessories.

Detailed Specifications

BIU/HR 42,000 BTU
Fuel Propane (LP Gas)
Inlet Pressure 11" WCI Min to 14" WCI Max
Manifold Pressure 1.5* - 7.8" WCI
Power Input 12VDC < 3 amp
Water Operating Pressure 125 PSI Max
Dimensions
Width: 12.5"
Height: 12.5"
Depth 15.5"
Shipping Weight 22 Ibs.
ECO Max Temperature 140° (F)

Static Operation – No Water Flow

Input 12VDC Power:

Red wire positive and black wire ground to the back of the water heater
Confirm that you have a good power source with filtered voltage. Older linear type converters can cause issues with the operation of this more advanced board.
12VDC Ground Black wire runs directly to the board through the power connector

Power Switch and Fuse:

Green RV Girard Tankless Water Heater GSWH-2-operation

Removal and replacement of the fuse and switch:

Green RV Girard Tankless Water Heater GSWH-2-operation-a

Green RV Girard Tankless Water Heater GSWH-2-operation-b

Operational Indicator LEDs

These LLEDs indicate proper voltage and operation of the water heater. Voltage below 10VDC will cause the red light to illuminate a, nd the board will not engage the operation of the water heater.

Green RV Girard Tankless Water Heater GSWH-2-operation-c

User control panel

green_rv_girard_tankless_water_heater_gswh-2-control.png

Recommended Setting: 115 degrees.
Icons showing temperature setting, Output Temperature, Fan, Flame, and Water Flow. These are important for troubleshooting.
Confirm that you can change the temperature setting on the UCP.
Wire connections.
Damage to the control board may occur if the blue wire between the Control board and the UCP is connected to ground or 12VDC or crossed.

No Operation of the UCP

Confirm operation of the UCP. Turn on the switch, back light operation, and change the temperature setting.
Confirm good power and ground to the Control board, and the green light is on.
Check the wire connection at the XK terminal.
Check the length between the 2 wires at the connection of the UCP. You should find a fluctuating voltage of 9 to 11VDC.
Check the voltage between the 2 blue wires at the XK Connector. You should find a fluctuating voltage of 9 to 11VDC.
If there is no power to the UCP,, but it is present at the board,d then there is a wiring issue between the UCP and the control board.
If you have no power at the UCP and no power at the control board, then the control board is bad. But there may still be a wiring issue that may have caused the board to fail. Eliminate before replacing the control board.
If the wires are crossed,, then the board next to the XK Connector will get hot. Discoloration will occur on the board, the RD, and the control board may fail.
If the wiring between the UCP and the control board is shorted to ground or 12 VDC, then discoloration may occur, and you will get erroneous readings at the UCP,, and the control board may fail.

Green RV Girard Tankless Water Heater GSWH-2-control-a

Exploded View

Green RV Girard Tankless Water Heater GSWH-2-explode-view

Green RV Girard Tankless Water Heater GSWH-2-explode-view-a

Replacement Parts: Components

Green RV Girard Tankless Water Heater GSWH-2-description

Functional Diagram

Green RV Girard Tankless Water Heater GSWH-2-diagram

Wire Diagram

Green RV Girard Tankless Water Heater GSWH-2-diagram-a

GSWH-2 WARRANTY FLAT RATE LABOR HOUR GUIDELINES

TIME ALLOWANCE INCLUDES DIAGNOSTIC TIME (In hours calculated at 1/10th hour - 6 minutes)

Green RV Girard Tankless Water Heater GSWH-2-warranty

*For any component that does not appear on the above list, contact Girard Products LLC for authorization and instructions. Labor will not be paid until the part is returned. To process a warranty claim,m the Service Center must be an authorized Girard Products, LLC Service Center.
Authorized Service Centers must obtain prior approval for work that exceeds the flat rate time allowances.
Operational failure caused by improper installation or the use of onon-GSWH-2-2 components will result in the warranty claim being denied.
All warranty parts in the first year of warranty will be shipped via FedEx ground. Contact Girard Products Customer Service with questions or concerns about labor hours’ guidelines or labor functions (949) 259-4024.

Troubleshooting

The new GSWH-2 water heater differs from its predecessors in that it allows the customer to operate the product just as they would a regular tank water heater. By this,, is we mean that they simply turn on the hot side and add cold water to their desired temperature. For this reason, we do not spend a great deal of time explaining adjustments and exceptions.
The tankless water heater is very efficient in that you are not always reheating water to maintain a certain temperature. When the hot water faucet is turned on, the water heater comes on and immediately begins making hot water at the SET temperature. We recommend 115 degrees, since this is the most efficient temperature in both propane savings and usability. Of course, the temperature setting can be adjusted from 95 to 124 degrees.
One of the advantages of this product is that the UCP will show the customer what it is doing during operation. An added feature is that most faults or defects will be displayed on the UCP’s display screen, thus eliminating the time spent to determine what might be wrong when it is not operating properly.
Listed below are some of the most common concerns:

Hot water takes too long to get to the shower or another faucet.

The water heater begins making hot water as soon as the hot water faucet is turned on. The time it takes to get to the faucet is determined by the length of the piping from the water heater to the faucet. This is determined by the plumbing configuration of the RV. A tank water heater will do the same thing. If a person is primarily a DRY camper, there are now devices that can be installed in their RV that will eliminate this problem.

The water heater does not start up when the faucet is turned on (no fault code or water flow icon on display).

Be sure the on/off switch is turned on, outside.
Be sure the UCP switch is turned on.
Outside, remove the cover on the control board. Look for the GREEN LED. If the green light is on, power is coming into the water heater. If it is not on, check the fuse and wiring. Check for a separate on/off switch in the RV.
See if there is a RED LED illuminated on the board. This indicates that the incoming voltage is too low.
Test water flow. Must have at least .8 GPM. Does the flow seem low out of the faucet? Open different faucets. Take the strainer off one faucet.
Confirm that water lines are connected properly. Hot to hot, cold to cold.
Does the customer use a flow restrictor on the incoming water line? If so. Remove.
Does the customer use a water filter? Is the filter clean?
Using a gallon container, check to see how much flow is coming out of the faucet. If the water flow is less than 1 GPM, then have the customer fill the fresh water tank and run off the pump.
If more than 1GPM, replace FLOW SENSOR.

The water heater comes on and then locks out with an E-1 code.

Confirm that the gas tank is turned on and that they have propane in the tanks.
If this is the first start-up, or a refilled tank, consider that the customer needs to try multiple times for startup. Turn the burners on the range to get the gas moving through the system.
Tap on the gas valve. If it starts, then replace the gas valve.
Smell for gas coming out of the exhaust.
If the weather is cold, do they have enough propane in the tank?
Is the regulator on the tank working?
Replace the gas valve.

The water heater comes on and immediately gives an E-5 code (motor failure).

Confirm that the motor is not jammed by physically turning the blower under the blower housing.
Check the wire CN1 wire connection at the control board.
Replace the motor or water heater.

The water heater blower motor does not come. (No fault code - water flow icon is on).

Confirm that the motor is not jammed by physically turning the blower under the blower housing.
Check the wire CN1 wire connection at the control board.
Replace the control board.

The water heater comes on and then gives the E-8 code (air pressure switch).

Confirm that nothing is blocking the exhaust vent.
Confirm that the plastic tube is connected to the blower and pressure switch.
Check the lock nut at the bottom of the blower, where the plastic tube attaches. If it is loose, tighten.
Look through the exhaust and confirm that the petit tube is facing away from the blower wheel. (works with suction)
Confirm wires are attached properly.
Replace the pressure switch.

The water heater comes on and then goes to an E-3 code. (ECO tripped).

Confirm that the customer has enough water pressure.
Have the customer set the thermostat to 115 degrees or lower.
Jump ECO to confirm that the ECO is not defective. If the W/H works properly, then replace ECO.
If the customer is in very hot conditions, he may have to replace the current ECO with a higher degree one.

The water heater burner comes on and then shuts off/and o.f

Confirm the gas line connection is not kinked.
Confirm the tank regulator is working properly.
Confirm that electrode wires are properly connected.
Confirm that electrodes are installed correctly, and not loose.
Listen for SLOW sparking at the electrodes; if so, replace the electrodes.
Replace the board.

The customer cannot control the temperature from the set point, gets too hot,t and then maybe too cold.

Purge water lines.
Water pressure e too low. Some campgrounds have the water pressure very low. Try putting water in the freshwater tank and running off the pump.
Set the temperature lower.
Possible partial bypass opened.
Possible, outside shower faucets turned on and just the shower button closed. Same for the inside shower.
Possible, outlet temperature probe, defective. Have not confirmed this.
Replace the water heater.

Pros & Cons

Pros:

Compact and lightweight design ideal for RVs
Energy-efficient and cost-effective operation
Continuous hot water supply on demand
Durable construction with high-quality materials
Easy-to-use controls and a clear display panel
Environmentally friendly with reduced emissions

Cons:

Higher initial cost compared to traditional tank-style heaters
Requires proper installation and maintenance
May require additional accessories for installation (e.g., venting kit)
Limited flow rate may not be sufficient for large families or simultaneous use

Customer Reviews

Customers have generally praised the Green RV Girard Tankless Water Heater GSWH-2 for its reliability and performance. Many reviewers appreciate the space-saving design and the continuous hot water supply. However, some users have noted that the initial installation can be complex and may require professional assistance.

A common complaint is the higher upfront cost, but most users agree that the long-term benefits in terms of energy savings and convenience make it a worthwhile investment.

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