2018-05-09
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Error character position on the LCD
Error descriptions
Temperature sensor 2 (return) status
0 – no errors (normal operation)
8 – sensor failure (open circuit)
C (8+4) – sensor failure (short circuit)
Temperature sensor 1 (supply) status
0 – no errors (normal operation)
8 – sensor failure (open circuit)
C (8+4) – sensor failure (short circuit)
Flow sensor status
0 – no errors (normal operation)
1 – no signal (flow sensor is empty or air bubbles are present)
2 – flow flows in an reverse direction
4 – flow rate above 1.2 × q
s
(indication: q = 1.2 × q
s
)
8 – electronics failure
If more than one error has been detected in meter, the error codes are summed according hexadecimal system and displayed:
3 = correspond to sum of errors: 2 + 1
5 = correspond to sum of errors: 4 + 1
7 = correspond to sum of errors: 4 + 2 + 1
9 = correspond to sum of errors: 8 + 1
A = correspond to sum of errors: 8 + 2
B = correspond to sum of errors: 8 + 2 + 1
C = correspond to sum of errors: 8 + 4
D = correspond to sum of errors: 8 + 4 + 1
E = correspond to sum of errors: 8 + 4 + 2
F = correspond to sum of errors: 8 + 4 + 2 + 1
In a case when value of at least one digit of error code is ≥ 8, the thermal energy calculation and summation of the working medium volume and
operation time without errors are stopping. In a case when value of the flow sensor error is equal 4, duration of time when the flow rate exceeds
1.2 × q
s
is registered additionally.
6.4. Test mode
6.4.1. Destination of connector configuration pins
The 2-line 10-pole configuration connector is on the calculator PCB, located between the temperature sensor screw terminals and the pulse
input/output screw terminals (see Fig. 10.1.). The configuration pins destination is presented in Fig. 6.6.
Fig. 6.6. Configuration pin connector designations.
6.4.2. Activating test mode (verification)
In the test mode it is possible to achieve precise results within short measuring time. For activation of the test mode open the meter, remove all
jumpers from the configuration pin connector and set up one jumper as shown in Fig. 6.7.
Fig. 6.7. Activating the test mode.
jumper
Activate/deactivate test mode
Energy pulse output (in the test mode)
Volume pulse output (in the test mode)
Tx – data reading (in the test mode)
Rx – data reading (in the test mode)
