Navien CH-180 - Service Manual

CH-180 CH-210 CH-240
CH-240 ASME
Combination Water Heater
/ Heating Boiler
MODEL
CH
Combination Water Heater / Heating Boiler
Combination Water Heater / Heating Boiler
Ver. 1.00
Service Manual
Service Manual
Service Manual
Navien America, Inc.
20 Goodyear lrvine, CA 92618
TEL +949-420-0420 FAX +949-420-0430
www.naviennamerica.com
1
st
Edition - July 2010
No. 20A-GT-002
 Do not store or use gasoline or other flammable vapors and liquids in the vicinity
of this or any other appliance.
 WHAT TO DO IF YOU SMELL GAS
 Installation and service must be performed by a qualified installer,
service agency or the gas supplier.
WARNING
If the information in this manual is not followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
●
Do not try to light any appliance.
●
Do not touch any electrical switch; do not use any phone in your building.
●
Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s
instructions.
●
If you cannot reach your gas supplier, call the fire department.

Summary

NAVIEN WARRANTY

SAFETY CONSIDERATIONS

SAFETY DEFINITIONS

Explains safety terms and their meanings for hazard communication.

LIST OF SAFETY SYMBOLS IN THIS MANUAL

Identifies and explains various safety alert symbols used in the manual.

SYMBOLS USED IN THE INSTRUCTIONS

Details symbols used to draw attention to important information in the instructions.

SAFETY PRECAUTIONS

ELECTRICAL DIAGNOSTIC POINTS

KEY COMPONENTS DESCRIPTION

PCB

Describes the function, failure events, and diagnostic checks for the Printed Circuit Board.

High Limit Switch or Exhaust Limit Switch

Thermistor

Describes thermistor function, failure modes, and resistance/voltage checks.

Fan motor

Details the fan motor's function, failure causes, and electrical checks.

Flame Rod Ass’y

Ignition Transformer

Describes the ignition transformer's function and voltage checks for proper operation.

APS

Details the Air Pressure Sensor's function in combustion control and diagnostic checks.

3-Way Valve

Water pressure Sensor

Auto Feeder Valve

TROUBLESHOOTING

ERROR CODE LIST

Provides a comprehensive list of error codes, their reasons, and self-diagnostic actions.

01 ERROR

02 ERROR

03 ERROR

04 ERROR

05 ERROR

06 ERROR

07 ERROR

08 ERROR

09 ERROR

10 ERROR

11 ERROR

12 ERROR

13 ERROR

15 ERROR

16 ERROR

18 ERROR

19 ERROR

21 ERROR

22 ERROR

27 ERROR

28 ERROR

30 ERROR

35 ERROR

TROUBLESHOOTING GUIDE BY SYMPTOM

Noise

Hot water

MEASURING GAS PRESSURE SETTING

Adjusting the Gas-Air Ratio

REPLACEMENT OF PARTS

REPLACEMENT PROCEDURE

COMPONENTS REPLACEMENT INSTRUCTIONS

Provides detailed instructions for replacing various internal components.

PCB

Fan Motor(Combustion Air )

Flame Rod

Ignition Transformer

APS

Main Gas Valve

GPS

Flow Sensor

Circulation Pump

3-way Valve

Water Pressure Sensor

Auto Feeder Valve

Navien CH-180 Specifications