DeDietrich AWHP-2 MIT-IN-2 iSystem Installation And Service Manual page 132

8. Troubleshooting
Control system sequence
Status
6 Inside module shutdown
7 Operation in cooling
mode
11 Sweeping mode
(Heating)
12 Sweeping mode
(Cooling)
17 Bleed
130
Sub-status
60 Inside module heating pump in post-
operation
30 Normal operation
34 Heat pump off owing to the power cut off x
30 Normal operation
31 Heat pump off as the temperature is too
high
32 Normal operation, Back-up stopped
owing to the bivalency point
33 Normal running with the set point
temperature equal to the minimum flow
temperature to guarantee defrosting
34 Heat pump off owing to the power cut off
35 Back-up off owing to the power cut off
36 Heat pump off as the outside temperature
is too low
37 Heat pump off owing to a defrosting error
and a flow temperature value of less than
18°C
38 Defrosting
39 Defrosting with flow temperature less
than the minimum threshold permitted
30 Normal operation
34 Heat pump off owing to the power cut off x
61 Reversal valve in domestic hot water
position
62 Closure of the heating pump relays on the
inside and outside modules
63 Reversal valve in heating position
64 Opening of the heating pump relays on
the inside and outside modules
AWHP-2 MIT-IN-2 iSystem
Heating Domestic hot
water
x x
x
x
25/06/2014 - 7616371-001-04
Remarks
No heating or
domestic hot water
demand