Potterton Paramount 40 Installation, Operation & Maintenance Manual page 36

SECTION 6
PAGE 34
FAULT MESSAGES
Table 11 Fault Messages (display 13 flashing)
Display
flashing
(Code No)
10 Outdoor temperature sensor short circuit or discontinuity
20 Boiler flow sensor short circuit or open circuit
40 Boiler return sensor short circuit or open circuit
50 Hot water sensor 1 short circuit or open circuit
52 Hot water sensor 2 short circuit or open circuit
61 Fault, room control module RRG
62 Wrong room control module connected
81 Short circuit on LPB bus or no bus feed
82 Address conflict on LPB bus (EUROCONTROL)
91 EEPROM data loss
92 Hardware error
100 Two time master
110 Limit stat tripped
111 Max. temperature tripped
119 Water pressure switch tripped
132 Safety switch off
133 No flame detected (no flame message after expiration of
safety time)
134 Flame failure during operation
135 Incorrect air supply
140 Impermissible LPB segment number or equipment number
148 Incompatibility between LPB interface basic unit
151 Internal error in BMU
152 Error in BMU parameter settings
153 PARAMOUNT disabled
154 Temperature fault
160 Fan speed error
161 Max. speed exceeded
180 Chimney sweep function active
181 Controller stop mode active
183 PARAMOUNT in parameter setting mode
bu Faulty connection between Control unit and LMU
Display of 3-digit error messages: The 1 in the number 100 is displayed alternately with the 10's position
1) Switch off and disable; can be enabled only with reset
2) Switch off, start prevention; starts backup after fault disappears
3) Check parameters according to Table 8 and program basic settings or
check value "b 0" (internal BMU-SW diagnostic code, Table 5) and correct parameter error according to error specification!
4) Error display only, no switch off.
POTTERTON COMMERCIAL PRODUCTS DIVISION
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
Description Explanations
Possible caused and function sequence
Check connection and outdoor temperature sensor
Check connection 2)
Check connection 2)
Check connection; emergency operation 2)
Check connection 2) (not present)
Check room control module RRG
Connect compatible room control module
Check bus
Check addresses of connected control modules
Internal BMU error, process sensor, change BMU
internal BMU error, process sensor, change BMU
Check EUROCONTROL time master
Allow unit to cool dow n and reset. If fault occurs several
times, notify heating engineer 1) temperature stat open
circuit (possible short circuit in gas valve) 3)
No heat requirement, pump defective, radiator valves closed
Check water pressure and add water if required 2)
e,g, contact F7 open (Pressure Switch)
Possible low gas pressure
Reset, if fault occurs a number of time, notify heating
engineer, insufficient gas 9see Page 20) check polarity of
line power connection, ignition electrodes and ionisation
current 1) 2)
Automatic restart attempt by PARAMOUNT
Fan speed above or below speed threshold 2)
Check setting on EUROCONTROL
Check setting on EUROCONTROL
Check parameters (Tables 5 and 6) heating engineer 1) 2)
Repeat parameter settings
Press reset button 1)
1. Boiler temperature rises too fast.
2. Return temperature higher than flow temperature
3. Return temperature more than 50°C below flow temp,
check water flow through boiler.
4. Parameter incorrectly set (tables 5 & 6) check
parameters 1) 3)
Fan speed not reached 1)
Max. fan speed exceeded
4)
4)
1)
Check wiring in-between and replace control unit if
necessary
PARAMOUNT