Specifications

FM774/0708 BOOK 2 27
CO/CZ/CA/CR/CY/QA/QM/WW/EX/I FAULT FINDING
WATER FAULTS
FAULT Ref CAUSE ACTION
10. WATER NOT DRAINING
FROM UNIT
10.1 Unit may be in AUTO mode (CR or
WW only).
Check system mode at keypad.
Refer pg 12.
10.2 Electric drain valve failed and/or roof
unit triac shorted as a result.
If 240v present at drain terminals
when OFF selected - replace roof
unit. Recommend replace Electric
Drain Valve.
10.3 DRAIN jumper not fitted to
keypad - JP2. (Excludes WW & CA)
Check position of jumper is correct
for system set-up. Refer pg. 12.
10.4 Drain Interval set too long (CR only). Remove 7-pin cable from rear of
keypad, defaulting drain interval to 5
hours.
Counterweight drain valve
a) Stuck in closed position
Replace drain valve (SP2040).
b) Blockage in components Replace drain valve (SP2040).
11. WATER DRAINING OUT
OF CYCLE
11.1 Drain jumper not fitted to keypad
- JP2. (Excludes WW & CA)
Check position of jumper is correct
for system set-up.
11.2 Wash jumper not fitted to keypad
(CY only). Refer pg. 15.
Check position of jumper is correct
for system set-up.
11.3 Long jumper in incorrect position
(CY only). Refer pg. 15.
Check position of jumper is correct
for system set-up.
11.4 Dip switches in incorrect position
(CA only).
Refer to setting of dip switches on
pg. 17.
12. WATER NOT
CIRCULATING
Select “COOL” and fault find
as follows
12.1 Keypad failure - Display reading “C”
refer pg. 12.
If pump LED on MRU not lit
suspect keypad, cable or BMCU
fault.
12.2 Pump time delay is active, normal
operation.
Wait 1 min after solenoid operation
for pump to start.
12.3 Roof unit failure - no 240v supply to
pump.
If Pump LED on MRU lit and 240v
not present at terminals - replace
roof unit.
12.4 MS failure (if MS float fitted). If pump LED on MRU lit remove 3-
pin MS cable from MRU. If 240v at
pump replace MS.
12.5 Pump seized, impellor stripped or
base cracked.
Replace pump.
12.6 Pump strainer basket clogged. Remove & clean strainer basket.
12.7 Water distribution manifold blocked. Remove and flush manifold of any
blockages.
10.5
10.4a Drain internal set too long (WW
only).
Set drain interval on keypad. Press
SET and COOL)