28
Troubleshooting
(continued)
XXXXXXX
XXXXXXXX
Turn Dip SW2-4 to ON. (Refer to “5.1 Dip Switch Functions” in this manual.)
Dip SW2-4 is OFF.
Cooling mode is NOT
available.
28
1.
Normal operation.
2.
To run Cooling mode overriding the freeze stat. function, adjust the preset
temperature below which the freeze stat. function is activated. (Refer to
“<Freeze stat function>” on Page 49.
1. When the water in the circulation circuit
is unduly hot, Cooling mode starts with a
delay for the protection of the outdoor
unit.
2. When the outdoor temperature is lower
than the preset temperature below which
the freeze stat. function is activated,
Cooling mode does not start running.
The cooling system
does not cool down to
the set temperature.
29
Adjust the preset temperature below which the freeze stat. function is activated.
(Refer to “<Freeze stat function>” on Page 49.
If the preset temperature below which the
freeze stat. function is activated is low, error
L6 is more likely to occur interruption
operation before the freeze stat. function is
activated.
During DHW or LP mode
following the cooling mode,
error L6 (circulation water
freeze protection) occurs
and operation stops
frequently.
31
Adjust the setting time period of Heat-pump only operation. (Refer to “<Electric
heater (DHW)> on Page 47.
The setting time period of Heat-pump-only
operation is short.
The electric heaters are
activated shortly after DHW
or LP mode starts running
after Cooling mode.
30
No. Fault Symptom
Possible Cause
Explanation - Solution
73
Pre-Plumbed Slimline Cylinder Installation Manual
Summary of Contents for Ecodan PUHZ-HW140VHA-BS
Page 2: ......
