General1
Logamax plus GB162-80 kW/100 kW - Subject to modifications resulting from technical improvements!
6
section 6 Remedying faults using this document
FAULTS CAN BE REMEDIED USING THIS DOCUMENT, BY
FOLLOWING A 3-STEP PLAN. IT IS IMPORTANT THAT THE
SAME SEQUENCE IS FOLLOWED EVERY TIME.
Step 1: Symptoms
Step 2: Diagnosis
Step 3: Action
Step 1: chapter 5 Symptoms
Symptom = every indication which may be relevant in order to
recognize faults or errors.
An important symptom is the display indication on the BC10
basic controller of the boiler, but all other symptoms must also
be taken into consideration. In most cases, the display indica-
tion (e.g. the locking fault code
[2/l/\| [2/6/6|) can easily be read
from the BC10 basic controller, but the user of the boiler must
also be asked whether other symptoms have occurred. Exam-
ples of such symptoms are "the boiler makes whistling noises in
the morning" or "the room does not reach the required temper-
ature". The display indications and their meanings as well as
other symptoms are described in section 29 "Display codes and
other symptoms" on page 21.
There are three types of display indication:
– display reading (section 27 "Display readings" on page 21)
– display setting (section 28 "Display settings" on page 21)
– display code (section 29 "Display codes and other
symptoms" on page 21).
There are three types of display code:
– operating code
This code gives the status of the boiler. No action is
necessary.
– blocking fault code
The boiler is locked and will only restart after a manual reset.
The pump will operate continuously for frost protection.
– locking fault code
The boiler resumes normal operation when the fault has
cleared.
Every display code (e.g. the locking fault code
[2/l/\| [2/6/6|)
consists of:
– a main code (in this case [2/l/\|)
– a subcode (in this case
[2/6/6|).
After reading the main code, the subcode can be called up by
pressing the service key.
Step 2: chapter 6 Diagnosis
Diagnosis = establishing the cause of the fault or error on the
basis of the symptoms.
A diagnosis (chapter 6 "Diagnosis" on page 30) can be made
after determining all symptoms.
The right-hand column of the symptoms overview (section 5
"Symptoms" on page 21) refers to the corresponding diagnosis
box. The diagnosis box can be used next to easily find the
cause of the fault.
Step 3: chapter 7 Actions
Action = remedying the cause of the fault or error.
After laying down the diagnosis, the fault can be remedied by
means of chapter 7 "Actions" on page 56.
section 7 Logamax plus GB162
The Logamax plus GB162 condensing gas boiler is a fully up-
to-date central heating boiler, designed to provide a high level
of convenience, maximum energy savings, optimum care for
the environment and advanced safety features – all in a single
device.
This is why the boiler is equipped with the very latest electron-
ics. The electronic system consists of the UBA 3 (= Universal
Burner Automat 3) (see section 1, [32]) and the connected con-
trol panel, the BC10 (= Basic Controller 10) (see section 1, [4]).
The main task of this electronic system is to control and ensure
the safe operation of the central heating boiler.
In addition, it is possible to call up display readings, settings and
codes on the display of the BC10. The display settings can be
changed after calling them up. Also see section 23 and
section 28.
The working of the boiler during normal operation mode is
explained in more detail in chapter 4 "Operation" on page 10.
This chapter provides a step-by-step explanation of the boiler
operation under normal operating conditions.
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