Rinnai EX17CT Guida alla risoluzione dei problemi

1 7/21/2017

PROPRIETARY and CONFIDENTIAL

Enhancing Lives By Changing The Way Water Is Heated

Rinnai Direct Vent Wall Furnace

Training Program

Level III –Service Fundamentals

27/21/2017 Rinnai Proprietary & Confidential 27/21/2017 Rinnai Proprietary & Confidential

Rinnai Service and Support (800-621-9419)

CRC –Consumer Response Center –general calls, consumer questions, etc.

Available from 8 a.m. to 8 p.m. EST, Monday –Friday.

Parts Department –parts orders.

Available from 8 a.m. to 8 p.m. EST, Monday –Friday.

Warranty Department –warranty claim issues.

Available from 8 a.m. to 5 p.m. EST, Monday- Friday.

Technical Support Department –technical issues related to the function and repair of Rinnai

products.

Available in the office from 8 a.m. to 8 p.m. EST, Monday –Friday AND 24/7/365 on call support for

technicians who are at the service location. Technicians only, call 1-888-RINNAIS ( 888-746-6247)

Engineering / Applications Department –calls related to product use and applications

including sizing.

Available from 8 a.m. to 5 p.m. EST, Monday - Friday.

Rinnai America also provides the following websites for support:

•www.rinnai.us –for installation manuals, product specifications and supporting documents. More technical information is

available in the “Partner Portal” section of the website. Registration is required for access.

•www.trainingevents.rinnai.us –to register for Rinnai product training live and online classes and videos. Service manuals,

installation manuals and other technical documents are available under the “Resources” section of the site.

3 7/21/2017

PROPRIETARY and CONFIDENTIAL

Enhancing Lives By Changing The Way Water Is Heated

The model & serial numbers will be located on both sides of the product.

The serial number will also be located on the back of the cabinet for some models.

Product model and serial number locations:

Rinnai Model

Number

Factory Model

Number

Serial Number

Label from the back of cabinet.

Serial number format:

First two letters –Year & Month of Manufacture.

Second two letters –Product category & manufacturing facility.

Last six numbers –Production sequence number.

4 7/21/2017

PROPRIETARY and CONFIDENTIAL

Enhancing Lives By Changing The Way Water Is Heated

Primary Service Tools:

For service, troubleshooting, and component replacement, the following primary service

tools will be needed (other tools could be needed on occasion).

#2 Phillips

Head

(magnetic)

Small

Phillips

Head U-

Tube Digital 3/16” Allen Wrench Multimeter

(Volt/Ohm Meter)

Screw Drivers Manometer

and or

Should you need to contact Rinnai technical support please have these tools available to

speed up the troubleshooting process. Also Rinnai needs to know the full model and

serial number, have the front cover removed from the product, provide any relevant

information such as gas pressures, set temperatures, error codes etc. as well as have

utilized the tech sheet and/or service manual to troubleshoot the product as much as

possible prior to the call.

5 7/21/2017

PROPRIETARY and CONFIDENTIAL

Enhancing Lives By Changing The Way Water Is Heated

The following procedures are for

EX17CT / EX22CT

Service Procedures for other models will vary.

PRODUCT DISASSEMBLY AND

COMPONENT REVIEW

6 7/21/2017

PROPRIETARY and CONFIDENTIAL

Enhancing Lives By Changing The Way Water Is Heated

1.Remove the toe kick panel

from the bottom of the

cabinet by pressing inward

on the latches on the left

and right sides.

Disassembly:

2.Slide the humidifier tray

out from the bottom of the

cabinet. The tray can be

completely removed.

7 7/21/2017

PROPRIETARY and CONFIDENTIAL

Enhancing Lives By Changing The Way Water Is Heated

Front cover removal:

1. Remove 5 screws from the louver plate on the front cover.

2. Slide the front

panel upwards to

free the side and

top mounting tabs.

8 7/21/2017

PROPRIETARY and CONFIDENTIAL

Enhancing Lives By Changing The Way Water Is Heated

Inside front cover:

Inside the front

cover is a ------

a. Wiring diagram.

b. Part name chart.

c. Wire color code

chart.

d. Basic operating

and safety

information.

Should you need to

call Rinnai tech

support for

assistance you can

also record any case

number or other

important data

inside the cover.

9 7/21/2017

PROPRIETARY and CONFIDENTIAL

Enhancing Lives By Changing The Way Water Is Heated

1. Remove the 5 top panel screws.

2. Note the black plastic alignment

piece on the center screw (some

models may have three alignment

pieces on the three middle

screws).

3. Disconnect control panel wiring

from PCB.

4. Pull forward, then up on the top

panel to release the tabs and to

remove the panel.

Control Panel / top panel removal:

5. The control panel has a

plastic drip pan

underneath it to protect

the PCB from spills on

top of unit.

10 7/21/2017

PROPRIETARY and CONFIDENTIAL

Enhancing Lives By Changing The Way Water Is Heated

1. All current models use a pressure

sensor to ensure there is proper air

movement through the burner, heat

exchanger, and vent system.

2. The pressure sensor snaps into the

PCB case. A pressure sensor is not

included with a replacement PCB. The

existing sensor should be moved to the

new PCB’s casing if it is replaced.

3. The black pressure hose connects on

the front of the sensor.

4. The clear pressure hose connects on

the back of the sensor.

5. On the back of the unit, these hoses

connect to the intake of the vent

system—the black hose connection is

labeled, “BLK”.

6. NOTE: Do not confuse the pressure

sensor hose with the gas valve

pressure balancing hose. The gas valve

hose is a thicker/heavier hose.

Pressure Sensor:

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