Code
Description
13 / 23 / 33
Low pressure switch
14
Indoor fan thermal switch
15 / 25 / 35
Repeated cold start-up or suction temperature < ‑25 °C
41
Gas control 1 or resistor 1 fault
42
Gas control 2 or resistor 2 fault
43
Resistor stage 3 fault
44
Resistor stage 4 fault
45
Fault in economiser or hot water coil (outdoor supply, water return sensor)
46
Smoke detector, high temperature, or supply temperature >80 ºC
91
Ambient sensor open or short circuited
92
Internal sensor not calibrated
93
Communication error
94
fault with AL terminal connected
95
S5 digital sensor not detected
96
S6 digital sensor not detected
97
S7 digital sensor not detected
98
S8 digital sensor not detected
99
Digital outdoor sensor not detected
N O T E
• The fault pilot light on the DPC-1 thermostat display will flash if a fault code between 0 and 90 is
shown.
• The fault pilot light on the DPC-1 thermostat display will also flash if fault code 93 is shown.
1.7.5 Restarting the air conditioning unit in the case of breakdown
If you have to restart the unit it is possible by pressing the MODE key on the thermostat repeatedly until
the display indicates OFF.
Then, restart the unit by pressing the MODE key and select the required operating mode.
The unit will start up normally if the cause of the fault is no longer present. If the cause persists, it is
possible to start the unit a maximum of three times within a 24-hour period.
If the thermostat display keeps showing the pilot light -1- and any fault code or if the air conditioner does
not start, contact a Johnson Controls Inc. Authorised Technical Assistance Service.
1.8 Regular maintenance by the user
1.8.1 Maintenance Schedule
The air conditioning unit is designed to require as little maintenance as possible. Nevertheless, to ensure
smooth operations with a minimal use of electricity, a long working life and compliance with the regula‐
tions of each country, regular maintenance inspections must be made.
Johnson Controls Inc. shall not be considered responsible for any damage caused by improper mainte‐
nance of the unit, which includes anything inconsistent with that described in this document or others
specifically provided with the unit.
To make them easier, maintenance tasks have been grouped by time intervals in a series of tables.
Maintenance responsibilities of the user
, see on page 12 .
User manual
1
Regular maintenance by the user
1.8
11
