Fault-Finding; General; Failure Mode (1; Cooling Mode - REMEHA Gas 310 ECO Technical Information

14

FAULT-FINDING

14.1 General

If the boiler does not start up, check the following:
- Is a 230 V supply present;
- Is there a heat demand;
- Has the boiler control (parameter 3) been set cor-
rectly (see section 13.1.3).
If the above items have been verified and the boiler
does not start, this indicates a failure.
In the case of a failure signal, both the code window
and the t window will flash. Except for failure F03
(does not flash).
g
Important!!
Keep a record of the failure code before resetting
(numbers, including flashing ones and dots) and quote
it when asking for support. The failure code is needed
to find the cause of the fault quickly and correctly. For
further details on the various failure codes and possible
causes refer to table 22.
i
Apart from failure codes (lock-out), the system
also knows shut-off codes (see section 12.4). In the lat-
ter case only the two dots in the t window will flash
and the code window will display b. A shut-off code
may refer to a system problem or incorrect setting.
14.2 Failure mode (1 [[) (service level)
The latest failure and corresponding operating codes
and applicable temperatures are stored in the micro-
processor memory and can be read out in failure mode
as follows:
- Enter the service code c 12 (see section 13.2).
- Press the m key until 1 appears in the code window
(digit flashes).
- Select the required step with the s key.
Code t
Description
1 37
Failure code (see table 22)
Operating code, with failure interven-
2 03
tion (section 12.1)
Flow temperature, with failure inter-
3 53
vention
Return temperature, with failure inter-
4 40
vention
Flue gas temperature, with failure
5 58
intervention
6 63
Boiler block temperature
7 +
Time from failure (with PC software
00
8
only)
9 18
Ionisation level (analog)
Operating hours (hundred thousands
a 11
and ten thousands)
Supplied By www.heating spares.co Tel. 0161 620 6677
Operating hours (thousands and hun-
b 80
dreds)
c 26
Operating hours (tens and units)
Fan speed at failure (thousands and
d 26
hundreds)
e 67
Fan speed at failure (tens and units)
table 21 Service level failure mode
In the above example:
The return temperature sensor is defective (= failure
code 37), during burning (= operating code 03)
with a flow temperature of 53°, return temperature of
40° and a flue gas temperature of 58°.
The boiler block temperature was 63 °, the ionisation
level was 1.8 uA, the boiler had 118026 operating hours
and a speed of 2667 rpm.
The time elapsed after the failure can only be read on a
PC or laptop.

14.3 Cooling mode

This mode enables maintenance on the burner and/ or
the heat exchanger to be carried out more efficiently.
In this mode, the fan runs at maximum speed for two
minutes, which cools down the boiler rapidly. When this
mode is active, the system does not respond to heat
demands.
g
Important!!
ed if there is no heat demand on the boiler.
The code c[l indicates that the mode is active (
c[l for cooling).
The mode is activated by pressing the s and [+] keys
simultaneously (during normal operating status with no
heat demand).
The mode can be terminated prematurely by pressing
the [+] and [-] keys simultaneously.

14.4 Summary of failures (lock-out)

In the case of the following failures, note the dots in
between the numbers ()0 = 100. )1 = 101 and
)2 = 102, see section 11.3).
45
This mode can only be activat-