Geco G-201-P00 Series - Problems and Their Removal

page 12 SERVICE MANUAL FOR PRODUCERS SBR TYPE G-201-P00
PPUH „GECO” - G-201-P00 01,02 PRINTOUT DATE 05-01-24
IX. PROBLEMS AND THEIR REMOVAL
defect symptoms check
1. Display is not lit
although G-201 is
connected to mains
Check:
- if there is voltage 220V on feeding clamps L and N
2. Compressor
does not switch on
although it is
signalled that it is
on: red diode
Check:
- if there is voltage 220V on clamps P2 and N – If there is voltage,
check the compressor
3. Defrosting heater
does not switch on
Check:
- if there is voltage 220V on clamps as described on the casing of the
controller
- if there is, check the heater
4. Error of
temperature
indication
Check:
- connection of sensors to connectors
- the value of parameter ‘d4’
- the value of parameter ‘r0’
- if the sensor is fixed correctly
- the condition of the cable of the sensor: the cable can not have any
defects
- in detail the lookout of external surface of sensor shell to see whether
it has not been damaged mechanically.
5. impossible to set
the required
temperature
Check:
the value of parameters ‘d0’ and ‘d1’ (d0<d1)
6. dots on the
display flash, no
possibility to switch
it on
Check :
- the value of feeding voltage
- condition of feeding connectors
- whether feeding connectors are tightened up
7. ‘’abnormal’
‘strange’ operation
of the unit
Check:
- if there is voltage 230V on feeding clamps L and N
- condition of feeding connectors
- ‘zeroing’ of cooling unit
- condition of electric system and the number of units connected to
one phase
- if the type of thermostat is right (label with description of outlets) for
the unit
- whether the thermostat was not wetted by water or other liquid
- if thermostat is not exposed to humidity or sudden changes of
temperature