Electra DNG 18 Service Manual page 89

CONTROL SYSTEM
Notes :
1. At the first COMP activation after SB or OFF, if (OCT < 0
min, else DI = 40 min.
2. In the following Deicing cycles, the time interval between two Deicing cycles
activation is between 30 to 80 min (refer to the flow chart).
1. For RC group, HEs are forced OFF. IFAN operation is as in Heat Mode,.
IFAN will be set to OFF when ICT<30
For WAX, the IFAN is simply forced OFF.
3. For SH group, HEs are forced ON and IFAN is forced to operate in Low
speed, regardless of the ICT and difference between RAT & SPT.
13.8.4 .
High pressure protection (excluding RH Group
Mode: (Auto) Heating
Fan: Any
Timer: Any
I Feel: On or Off
Control Function
Protect the Compressor from high pressure by switching OFF the OFAN and COMP.
o
ICT [ c]
67
66
61
55
52
Any
COMP
Off
Any
OFAN is force
OFAN
Off
ON
OPER
BLINK
LED
Notes:
1. IFAN, HE1 and HE2 will be activated according to the relevant Heating
Mode Sect.
2. In case of any malfunction in the relay control circuit, the OCT is also
monitored during heating mode. Whenever OCT reaches 70
indicates a high pressure in the outdoor coil, the COMP will be forced off
automatically. The COMP can be turned on again only after the 3 min
COMP ON delay and the OCT is under 70
in this case.
13-26
For all models except WAX
COMP is forced OFF
Off
Revision Y05-01
CONTENT
o
c), then DI = 10
o
c.
)
For WAX model
o
o
c. The OPER LED will not blink
Service Manual - DNG Series
COMP is forced OFF
c, which