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146
Message
System characteristics Cause
Measures
«
C9 Refrigerant circuit
Refrigerant circuit fault:
Safety high pressure
switch has responded.
Compressor motor pro-
tection (thermal relay)
has responded (if instal-
led. Full wave soft starter
or separate compressor
motor protection has
responded)
■ Check flow and return
temperature sensors in
primary and secondary
circuits.
■ Check primary and sec-
ondary circuits for pres-
sure and throughput
(see also fault
U
A9).
■ Have heat pump tested
by a refrigeration engi-
neer.
The switching signal can
be tested at terminal
1X5.6 (230 V).
Note
After removing fault,
switch appliance OFF and
ON again once.
«
CA Primary source
Primary circuit fault:
■ Faulty power supply to
fan
■ Fan blocked or faulty
■ Check safety equip-
ment on terminals
3X3.9 and 3X3.8; in
systems without safety
equipment, check jump-
ers 3X3.9 to 3X3.8.
The switching signal can
be tested at terminal
1X7.6 (230 V).
¸
CB Primary temp.
Heat pump stops.
Min. primary inlet tem-
perature not achieved
■ Outside temperature
too low, no measures
required.
Troubleshooting
Control unit diagnostics
(cont.)
5414 828 GB
Содержание VITOCAL 350-A
Страница 54: ...54 5 3x 7 6 3x 3x 3x Installation sequence Fitting the outer panels cont 5414 828 GB ...
Страница 57: ...57 3x 8 9 3x 3x 3x Installation sequence Fitting the outer panels cont 5414 828 GB Installation ...
Страница 58: ...58 2x 10 11 3x 3x Installation sequence Fitting the outer panels cont 5414 828 GB ...
Страница 60: ...60 4 mm 4x 4x 4x 3 2 1 2 2 Installation sequence Fitting the silencer hoods only type AWH O 5414 828 GB ...
Страница 62: ...62 Type AWH I 1 Installation sequence Installing the heat pump cont 5414 828 GB ...
Страница 63: ...63 Type AWH O 2 3 4 5 4x 1 Installation sequence Installing the heat pump cont 5414 828 GB Installation ...
Страница 115: ...115 Fitting the front panel 1 2 Installation sequence Closing the heat pump cont 5414 828 GB Installation ...
Страница 227: ...227 053 032 039 034 038 033 034 039 040 027 Parts lists Parts list type AWH I cont 5414 828 GB Service ...
Страница 228: ...228 052 054 059 008 056 025 020 Parts lists Parts list type AWH I cont 5414 828 GB ...
Страница 236: ...236 053 032 039 034 038 033 034 039 027 Parts lists Parts list type AWH O cont 5414 828 GB ...
Страница 237: ...237 052 054 059 008 055 025 020 Parts lists Parts list type AWH O cont 5414 828 GB Service ...