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■ E914
Thermostat Wiring Error
If both heating and cooling signals are
g
-
simultaneously input to the terminals of
the thermostat on the PBA.
Use only one of the 230V or 24V terminal
-
types. Do not use both types, otherwise,
an error occurs.
an error occurs
Flow Switch
9. Troubleshooting
9. Troubleshooting
g g
Check the wiring of the thermostat.
Is the thermostat wired to both
Is the thermostat wired to both
230V and 24V?
Use only one wiring type of either
Use only one wiring type of either
230V or 24V. Do not use both
19
19
C
Cooling
23
C
Cooling
Cooling
No
Check if both the cooling and the heating wire hav
Yes
types.
20
20
21
21
22
22
N
H
N
Heating
24
25
26
N
H
N
Heating
Heating
been connected to each of the thermostat.
230V Thermostat
230V Thermostat
24V Thermostat
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