Before You Call For Service…

Troubleshooting Tips

Save time and money! Review the charts on the following pages first and you may not need to call for service.

Problem	Possible Cause	What To Do

Not enough or no hot water.	Water Shutoff valve is not fully opened.	● Check shutoff valve and open fully.

	Hot water faucet is not fully opened.	● Open hot water faucet completely.
		(The main burner goes off when
		incoming water volume is
		inadequate.)

	Water piping is frozen.	● Allow piping to thaw.

	No electricity or water supply is cut off.	● Check that proper power is being
		supplied and/or water supply is
		adequate.

	Unit is not “ON”.	● Turn the unit “ON” by the button on
		the remote control.

	The temperature may be set too low.	● Increase the temperature setting.

	Mixing Valve Malfunctions	● Check and replace if necessary.
	(if applicable)

	Error code displayed on remote control.	● See instructions for Error Code and if
		required, contact a dealer for service.

	Not enough water demand.	● Increase water flow.

	Water inlet filter clogged.	● Clean water inlet filter.

	Fixture aerator is clogged.	● Clean aerator.

	Scale buildup in heat exchanger.	● Check for error code. If required,
		contact a dealer for service.

	Hot and cold water lines reversed.	● Reverse water connections.

Water not hot enough.	The temperature may be set too low.	● Check and open the gas valve fully.

	The gas valve is not fully opened.	● Call your gas company to verify the
		gas meter and gas piping size.

	Gas supply pressure is low.	● Call dealer for service.

	Bleed over in one of the hot water	● Decrease the temperature setting.
	fixtures.

Water too hot.	Temperature is set too high.	● Check shutoff valve and open fully.

	Water shutoff valve is not fully opened.	● Allow more water to flow.

	Small amount of water has been heated.	● Normal operation. There is no need
		to call for service.

Fan continues to rotate after hot water	This function is to supply hot water	● Normal operation. There is no need
faucet is closed.	when the hot water faucet is reopened.	to call for service.

CAUTION: Make certain power to water heater is “OFF” before removing protective cover FOR ANY REASON.

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.

CAUTION: For your safety, DO NOT attempt repair of electrical wiring, gas piping, remote control, burners, vent connectors or other safety devices. Refer repairs to qualified service personnel.

RUTG2-42(PVN)(PVP), RUTG2-53-(PVN)(PVP)(XN)(XP), RTG2-53-(PVN)(PVP)(XN)(XP), PH-16(FISN)(FISP), RMTG2-53-(PVN)(PVP)(XN)(XP) specifications

Rheem’s innovative line of tankless water heaters, including the PTG2-42(PVN)(PVP), RTG2-42(PVN)(PVP), PH20R-(IFSN)(IFSP)(OFN)(OFP), RMTG2-42(PVN)(PVP), and RMTG2-53-(PVN)(PVP)(XN)(XP), represents a significant advancement in residential and commercial water heating technologies. These models are designed to deliver hot water on demand, ensuring efficiency and convenience while minimizing energy consumption.

One of the standout features of these Rheem models is their energy efficiency. Employing advanced condensing technology, they are capable of converting up to 98% of the energy consumed into hot water. This impressive efficiency reduces utility bills and makes them an environmentally friendly choice compared to traditional tank water heaters.

The PTG2 and RTG2 series are particularly versatile, accommodating various installation needs. Their compact design allows for both indoor and outdoor installation, making them ideal for homes with limited space. Additionally, they are equipped with a multiple venting option, which provides flexibility in installation locations.

The PH20R series incorporates Rheem’s proprietary modeling and simulation technologies to optimize performance. These models feature enhanced safety functions and user-friendly digital controls, allowing homeowners to easily set and monitor their water temperatures. The ease of use extends to maintenance as well, as many components are accessible for routine checks and cleaning.

Another significant advantage of the RMTG2 models is their integrated Wi-Fi connectivity, enabling users to manage their water heating systems remotely through Rheem’s mobile app. This smart technology provides real-time data, alerts, and allows for temperature adjustments, ensuring that users always have hot water when they need it.

Rheem’s tankless water heaters also boast a robust warranty, a testament to their durability and reliability. With options that cater to various household sizes and hot water needs, these models can provide continuous hot water for homes with multiple bathrooms and heavy consumption.

For those seeking cost-effective, efficient, and smart water heating solutions, the Rheem PTG2, RTG2, PH20R, RMTG2-42, and RMTG2-53 series stand out as top contenders in the market. Their combination of advanced technology, energy savings, and user-friendly features position them as industry leaders, providing long-term benefits for any homeowner.