Yamato Neocool CF302L-A, Инструкция по эксплуатации

Страница: 35 / 47

31
9. TROUBLESHOOTING
Troubleshooting Guide
Symptom Possible causes Possible measures
Display is blank
when ELCB and
the Power switch
are turned ON (|).
●
Power supply failure
●
ELCB failure
●
Power switch failure
●
Controller failure
●
Check power supply voltage
(must be 115 V AC ±10%)
●
Replace relevant parts
Temperature does
not rise.
●
No-load operation
●
Operate unit with an external load
since unit does not have heating
function.
Temperature does
not fall
●
Refrigerator failure
Clogging of condenser fins
●
External temperature is high
●
Clean intake dust filter and condenser
fin (P.28).
Installation Precautions (P.13)
Temperature does
not fall when the
Run/Stop key is
ON
●
Compressor delay timer is in
operation
●
Excessive external load
●
External temperature is
exceeding 35 °C
●
Condenser is clogged with dust,
etc.
●
Wait until the Ref lamp stops flashing
(about three minutes from the start of
flashing)
●
Reduce the external load
●
Operating ambient temperature range
is 5 to 35 °C
●
Clean intake dust filter and condenser
fins
●
Power supply failure
●
Temperature sensor failure
●
Controller failure
●
Relay failure
●
Refrigerator failure
●
Check power supply voltage
(must be 115 V AC ±10%)
●
Replace relevant parts
●
Repair or replace relevant parts
Circulation will not
begin when the
Pump key is ON
●
Malfunction due to idle operation
or overload operation of
circulation pump
●
Circulation pump thermal stop
occurs due to excessive pressure
loss at the external device or
valve shut-off operation
(temporary)
●
Replace relevant parts
●
Open discharge valve
(when flow rate valve is installed)