User Guide

English

Installation and operating instructions Wilo-Stratos GIGA 57

• The fan wheel has to be pressed on as far as possible when it is

installed. Only press here in the area of the hub.

11 Faults, causes and remedies Have faults remedied by qualified personnel only! Observe the

safety instructions in chapter 10 “Maintenance” on page 48.

• If the malfunction cannot be rectified, consult a specialist techni-

cian or the nearest customer service or representative office.

Fault displays For faults, causes and remedies, see the “Fault/warning signal” flow

diagram (see chapter 11.3 “Acknowledging errors” on page 59, Fig. 50

- Fig. 55) and the following tables. The first column of the table lists

the code numbers displayed in the event of a fault.

NOTE:

If the cause of the fault no longer exists, some faults resolve them-

selves automatically.

Legend The following types of errors can occur with differing priorities (1 =

lowest priority; 6 = highest priority):

11.1 Mechanical faults

Error type Explanation Priority

A Permanent error 6

B Permanent error on the 6th occurrence 5

C Warning,

after 5 min, transition to an error

permanent error on the 6th occurrence

D Like error type A, but error type A has a higher

priority than error type D

E Emergency operation: warning with emer-

gency operation speed and activated SSM

F Warning 1

Fault Cause Remedy

Pump does not start or stops working

Cable terminal loose Check all cable connections

Fuses faulty Check fuses; replace defective fuses

Pump is running at reduced output Stop valve on pressure side throttled Slowly open the stop valve

Air in the suction line Seal leaks at the flanges; bleed

Pump is making noise

Insufficient supply pressure Increase supply pressure, observe mini-

mum pressure at the suction port, check

slide valve and filter on the suction side

and clean if necessary

Motor has bearing damage Have the pump checked by Wilo cus-

tomer service or a specialized service

center and serviced if necessary