Bedienungsanleitung REMKO KWG750 (Seite 19 von 60) (Englisch)

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Malfunction

Fault Code Possible cause Check Remedy

The unit

does not

start or

switches

itself off

autono-

mously

Power failure

Is all other electrical equipment

functioning?

Check the voltage and wait for

reactivation.

Unit fuse / main disconnecter

switched off

Does the unit have power?

Switch on the unit fuse / main

switch.

Waiting period too short Is the compr. symbol ﬂashing?

Plan for a longer waiting

period.

C(n)Mn

The maintenance interval

of compressor (n) has been

reached

Have the compressor mainte-

nance performed by a specialist

company

Reset the operating hours after

the maintenance interval.

AEP(n)

The maintenance interval of

the circulation pump has been

reached

Have the circulation pump

maintenance performed by a

specialist company

Reset the operating hours after

the maintenance interval.

APS /

ASPh

Incorrect electrical direction of

rotation of the mains supply

Has the phase sequence relay

switched through?

Change the direction of rota-

tion.

StbY

The controller is in standby

mode

Does the compressor symbol

light up?

Apply voltage and

select the operating mode.

Return temperature or param-

eter setting incorrect

Check the setting. Change the settings.

OFF No fault

Is the "external enable" ena-

bling contact closed?

Close / open

contact used.

AP1 Defective sensor, medium inlet Check of resistor PB1 Replace the defective sensor.

AP2

Defective sensor, medium

outlet

Check of resistor PB2 Replace the defective sensor.

AP 3-6 Defective transm. condensation Check of transmitter PB Replace the defective transmit..

Defective sensor, outdoor tem-

perature

Check of resistor PB Replace the defective sensor.

Atr1

Cabled remote control not con-

nected

Check of the connection / line

of the cabled remote control

If missing, set Parameter CF 74

from "1" to "0"

b(n)HP

High-pressure fault

Circuit n

Are the fans rotating?

Is the air inlet of the condenser

free of objects?

Have it checked by

a specialist company.

b(n)LP

Low-pressure fault

Circuit n

Is the pressure in the cooling

circuit OK?

Have it checked by

a specialist company.

b(n)hP Overtemperature of condenser

Are the fans rotating?

Is the air inlet of the condenser

free of objects?

Have it checked by

a specialist company.

b(n)hP

Undertemperature of condenser

Circuit n

Have the operating tempera-

tures been exceeded?

Decommission the system.

b(n)AC

b(n)AH

Anti-frost protection has

reacted

Circuit n

Is the temperature of the inlet

ﬂow 4°C or lower?

Increase the return temperature,

increase the medium volume

ﬂow rate

AEFL

Differential pressure monitor /

ﬂow monitor

reacted

Are the following items OK:

- Medium volume ﬂow rate

- No air in the medium

lines

- Circulation pump capacity

- Switches the differential pres-

sure /

ﬂow monitor

- Shut-off valves open

- Medium pressure too low

Have it checked by

a specialist company.

Atr1

Cabled remote control not

conﬁgured or connected

Does the cabled remote control

function perfectly?

Have the remote control and/

or parameters checked by a

specialist company.

AEt1,

b(n)tF,

A(n)tr,

b(n)HP

APS /

ASPh

Control fuse F1 230V triggered Has fuse F1 triggered?

Have the fuse replaced by a

specialist company.

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