Honeywell HWAC-1217S Bedienungsanleitung

Professional Installation Required!

Please read and retain these troubleshooting instructions.

ErrorName

Reference

Code Page

Internal Temperature Sensor Error

External Coil Sensor Error

Internal Coil Sensor Error

Internal Fan Error Of Indoor Unit

Indoor Unit And Outdoor Unit Communication Error

External DC Fan Error

Module Protection Error

PFC Protection Error

Compressor Out-of-Step Error

Exhaust Sensor Error

CompressorTop Head Sensor Error

External Temperature Sensor Error

OVP Or UVP Error

Outdoor Unit Control Panel And ModulePanel

Communication Error

Outdoor Unit EE Error

Recirculated Valve Switch Error

Protectionof Frequency Conversion

ERROR CODES –TABLE OF CONTENTS

Causeof Error Cause: Explains the most common error cause.

Inspection path: The order of troubleshooting.

Tools Required Tools that shouldbe utilized to fix/maintenance the error.

Possible Broken Part Any possibly broken part related to the error that may need to

be replaced.

Troubleshooting

Procedures

All the troubleshooting procedures are prepared from simple

to complex, from surface to internal, and from test to

replacement. These procedures cover the most common

causes for an error code to occur.

Key Details Often overlooked key details for licensed professional to

consider.

TERMS GUIDE/TABLE OUTLINE

Causeof Error

Cause: The unit detects a short circuit or open circuit of the

indoor temperature sensor during the inspection of main

control panel in the indoor unit, indicated by “internal

temperature sensor error”.

Inspection path: Sensor →Sensor wire →Connectors →

Main indoor unit control panel

Tools Required Multimeter, 15KΩstandard sensor (25℃)

Possible Broken Part Internal temperature sensor, main internal control panel

Troubleshooting

Procedures

1. Check if there’s resistance problem, short circuit or open

circuit in the sensor; the resistance value should be

within a reasonable range (15KΩ under the temperature

of 25℃)

2. Check if the sensor wire is broken.

3. Check if the terminal connectors are well fixed; check if

the weld between the terminal and the main control

panel is loose and pull the terminal slightly for

inspection if necessary.

4. Check if the sensor is damp/wet.

5. If no standard sensor is available, replace the internal

temperature sensor, and then check if the error persists;

if yes, check the main internal control panel and replace it.

Key Details

You can switch the unit to “Fan” mode and judge the accuracy

of the sensor though the temperature displayed on the screen.

DO NOT USE A SENSOR WITH A VALUE LOWER OR HIGHER

THAN 15KΩ

E1 –INTERNAL TEMPERATURE SENSOR ERROR

Causeof Error

Cause: The unit detects a short circuit or open circuit of the

outdoor unit coil sensor during the inspection of the outdoor

unit control panel, indicated by “external coil sensor error”.

Inspection path: Sensor →Sensor wire →Connectors →

Main outdoor unit control panel

Tools Required Multimeter, 20KΩstandard sensor (25℃）

Possible Broken Part External coil sensor, outdoor unit control panel

Troubleshooting

Procedures

1. Check ifthere’s resistance problem, short circuit or open

circuit in the sensor; the resistance value should be

within a reasonable range (15KΩ under the temperature

of 25℃)

2. Check if the sensor wire is broken.

3. Check if the terminal connectors are well fixed; check if

the weld between the terminal and the main control panel

is loose and pull the terminal slightly for inspection if

necessary.

4. Check if the sensor is damp/wet.

5. If no standard sensor is available, replace the internal

temperature sensor, and then check if the error persists;

if yes, check the main internal control panel and replace

it.

Key Details DO NOT USE A SENSOR WITH A VALUE LOWER OR

HIGHER THAN 20KΩ

E2 –EXTERNAL COIL SENSOR ERROR

Causeof Error

Cause: The detection of short circuit or open circuit of

internal coil sensor during the inspection of main internal

control panel, indicated by “internal coil sensor error”.

Inspection path: Sensor →Sensor wire →Connectors →

Main internal control panel

Tools Required Multimeter, 20KΩstandard sensor (25℃）

Possible Broken Part External coil sensor, outdoor unit control panel

Troubleshooting

Procedures

1. Check if there’s resistance problem, short circuit or open

circuit in the sensor; the resistance value should be

within a reasonable range (15KΩ under the temperature

of 25℃)

2. Check if the sensor wire is broken.

3. Check if the terminal connectors are well fixed; check if

the weld between the terminal and the main control

panel is loose and pull the terminal slightly for

inspection if necessary.

4. Check if the sensor is damp/wet.

5. If no standard sensor is available, replace the internal

temperature sensor, and then check if the error persists;

if yes, check the main internal control panel and replace

it.

Key Details DO NOT USE A SENSOR WITH A VALUE LOWER OR

HIGHER THAN 20KΩ

E3 –INTERNAL COIL SENSOR ERROR

Causeof Error

Cause: The PG motor is equipped with a speed feedback signal

line. When the feedback signal is not received by the control

panel, it has no way to recognize the fan moving. This will be

indicated as “Internalfanerror”.

Tools Required Multimeter, A PG motor

Possible Broken Part Mechanical error, PG motor, control panel

Troubleshooting

Procedures

1. Check if the fan can work for 1 minute by itself before the

error occurs. If yes, there is no mechanical error.

2. Disconnect the power supply and move the fan blade by

hand to see if there’sany resistance.

3. Reconnect the drive wire and speed feedback wire to

exclude anyfanerrordue to connector loosening.

4. Check if the plug-in terminal of speed feedback on the

control panel is loose and pull the terminal slightly for

inspection if necessary.

5. Replace the motor in the faulted air conditioner with

other PG motor (do not fix it with the fan for the time

being), if the main control panel still indicates “internal

fan error”, then replace the main internal control panel; if

the error disappears, replace the internal fan.

E4 –INTERNAL FAN ERROR (INDOOR PG MOTOR)

Causeof Error

Cause: The frequency converter needs internal and external

communication. When the communication cannot be reached,

the internal and external units will indicate “internal and

external communication error”. Only “main internal control

panel, connecting cable and outdoor unit control panel” are

related to communication; but sometimes the communication

error will be indicated when the external unit has no power

and the internal unit cannot connect with the external unit

due to other errors, then such situation should be

distinguished from “pure communication error” and treated in

a different way.

Inspection paths:

1. Unit powers on and works: Are the internal unit and

external unit matched? → Is the phase sequence of

connecting wires of internal and external units correct?

2. Unit does not power on: Can AC 220V be delivered to the

terminal block of the external unit? → Can the bridge

rectifier and module panel generate DC 310V? →Can the

outdoor unit control panel generate a low voltage power

supply of DC 5V? → Does the main external control panel

show the status of periodical reset?

Tools Required Multimeter, main internal control panel in normal condition

Possible Broken Part Connecting wire phase sequence and contact, main internal

control panel, outdoor unit control panel, module panel

Troubleshooting

Procedures

1. Check if theIDUandtheODUare connected properly.

2. Check the outdoor unit control panel, turn on the unit,

three lights should be lit up, they will then turn off and

the relay will pull in. If this does not occur, there is a power

supply problem.

3. Connect the black signal line S to terminal N of ODU.

Turn on the A/C, if "E5" is still reported, the outdoor unit

control panel needs to be replaced.

E5 –INTERNAL & EXTERNAL COMMUNICATION ERROR

Causeof Error

Cause: The main control panel will indicate “external DC fan

error” when it detects an imbalanced current on the three lead

wires of the drive motor.

Inspection path: Is the DC fan stuck due to foreign material?

→Motor terminal connectors →Outdoor unit control panel →

Motor

Tools Required Outdoor unit control panel in normal condition

Possible Broken Part Mechanical jam of external fan, outdoor unit control panel,

external DC motor

Troubleshooting

Procedures

1. Exclude the possibility of a mechanical jam in the fan

motors.

2. Observe if the terminal of the fan is not connected

firmly or the order of the lead wires is correct. If the

external fan of the newly installed unit rotates

reversely, first observe if the color order of the three

lead wires is correct or change the order of any two of

the three lead wires of the motor to see if the fan can

rotate in the correct direction.

Key Details The fan blades may shake for 3-5 seconds and then rotate

slowly when powered on, this is normal.

F0 –EXTERNAL DC FAN ERROR

Causeof Error

Cause: The power module is the part to directly drive the

compressor to work. It can protect the machine in time when

overcurrent, overvoltage or overheat occurs and stops the

compressor from working. It will, at the same time, send a

“shutdown request” to the module panel. The error triggered by

the “shutdown request” is called “module protection error”.

Inspection path: Supply voltage → Compressor wire, reactor

wire →System blocked →Module panel damaged →Outdoor

unit control panel destroyed →Compressor destroyed

Tools Required Multimeter, pressure gauge, megameter, module panel

in normal condition

Possible Broken Part Supply voltage, compressor wire, reactor, system pressure,

module panel, outdoor unit control panel, compressor

Troubleshooting

Procedures

1. Check if the supply voltage unstable or volatile. High

system pressure will cause rotation problems to the

compressor.

2. Is the module panel fixed to the radiator firmly? Is the

internal and external heat exchanger dirty? If “module

protection error” is indicated immediately after starting up,

observe if there is any component destroyed by a strike arc

near the module panel; use the multimeter to test if the

resistances between any two compressor wires are the

same. Use the megameter to measure if the resistance

insulation of the three compressor wires against the

ground wire is good (normally at MΩlevel).

3. Test if the 15V and 5V (3.3V) power supply on the module

panel is stable and exclude the module panel error caused

by power supply of the outdoor unit control panel.

4. Replace with the module panel. If the test is normal after

changing the module panel, then the original module panel

is destroyed.

5. If there is only electromagnetic sound and the compressor

does not work; or an irregular sound appears after the

compressor works for a while and then it shuts down; the

compressor may be blocked or destroyed. Consider

replacing the compressor.

F1 –MODULE PROTECTION ERROR

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